Posted on Leave a comment

Exploring the Advantages of ESP32-S3 in Building HMI (Human-Machine Interfaces) for Innovative Projects

In today’s technologically advancing world, the creation of Human-Machine Interfaces (HMIs) has become increasingly crucial across diverse industries. HMIs serve as the bridge facilitating seamless communication between humans and machines, enhancing user interaction and control. Among the array of microcontrollers available, the ESP32-S3 emerges as a versatile and powerful choice for constructing HMIs due to its myriad advantages and capabilities. Let’s explore what are the advantages of ESP32-S3 in Building HMI.

Introduction to ESP32-S3

The ESP32-S3, an innovation from Espressif Systems, has garnered acclaim for its exceptional ability to amalgamate high-performance computing prowess, seamless wireless connectivity, and an extensive array of GPIO pins within its compact architecture. Its distinguishing attributes include the deployment of a dual-core processing system, adept support for both Wi-Fi and Bluetooth protocols, and a diverse suite of peripherals. This unique amalgamation positions the ESP32-S3 as an optimal and versatile microcontroller specifically tailored to cater to the intricacies and demands of Human-Machine Interface (HMI) applications across various domains.

Advantages of ESP32-S3 in Building HMI

  • Robust Processing Power: With its dual-core architecture and efficient processing units, the ESP32-S3 exhibits remarkable computational capabilities. This prowess enables swift data processing, facilitating real-time responsiveness in HMI applications, and ensuring a smooth user experience.
  • Versatile Wireless Connectivity: The ESP32-S3’s support for Wi-Fi and Bluetooth technologies proves instrumental in establishing wireless connections between the HMI system and external devices. This feature enables remote control, data exchange, and seamless integration into IoT ecosystems, enhancing the system’s flexibility and usability.
  • Abundance of GPIO Pins: Equipped with a generous number of General-Purpose Input/Output (GPIO) pins, the ESP32-S3 allows for seamless interfacing with various peripherals, including displays, sensors, and actuators. This flexibility simplifies hardware integration and expands the range of functionalities achievable within the HMI setup.
  • Rich Set of Peripherals: The ESP32-S3 incorporates a diverse array of peripherals, including SPI, I2C, UART interfaces, ADCs, DACs, and more. These peripherals facilitate interfacing with a wide range of sensors, displays, and input devices, enabling the creation of comprehensive and feature-rich HMIs.
  • Low Power Consumption: Efficient power management features in the ESP32-S3 contribute to reduced power consumption, which is crucial for battery-operated devices or applications where energy efficiency is paramount. This ensures prolonged operation without frequent recharging or power interruptions.
  • Integrated Security Features: The microcontroller integrates robust security mechanisms, including secure boot, flash encryption, and cryptographic hardware acceleration. These features bolster the overall security of the HMI system, safeguarding against potential cyber threats and unauthorized access.
  • Rich Development Ecosystem: Supported by robust development environments like ESP-IDF and Arduino IDE, the ESP32-S3 offers an extensive library of resources, documentation, and community support. This facilitates easier prototyping, debugging, and development of HMIs, reducing time-to-market for innovative solutions.

Applications of ESP32-S3 in Building HMI

The ESP32-S3 demonstrates its multifaceted applications across a spectrum of industries and domains:

  • Smart Home Automation: Leveraging the ESP32-S3 facilitates the creation of seamless and user-friendly interfaces to oversee a plethora of smart home functionalities. Users can effortlessly manage an array of operations encompassing lighting controls, temperature adjustments, surveillance systems, and an array of connected devices through a singular, intuitive interface.
  • Industrial Control Systems: The formidable processing capabilities and GPIO versatility of the ESP32-S3 render it an optimal choice for orchestrating Industrial Human-Machine Interfaces (HMIs). Its adeptness enables the monitoring, control, and automation of machinery and intricate processes within manufacturing and production landscapes, augmenting efficiency and precision.
  • Healthcare and Wearable Devices: Its efficiency in power consumption and wireless connectivity features positions the ESP32-S3 as an advantageous component in the realm of healthcare HMIs. This microcontroller serves as a foundational element in crafting solutions such as remote patient monitoring systems and innovative wearable health devices, catalyzing advancements in healthcare services.
  • IoT and Consumer Electronics: The ESP32-S3’s prowess in wireless communication renders it an indispensable component within the Internet of Things (IoT) ecosystem and consumer electronics. Its capabilities enable the development of interactive interfaces tailored for smart devices, wearables, and the central hubs orchestrating the interconnectedness within the burgeoning IoT landscape.

NORVI ESP32-S3 in Building HMI

The NORVI HMI, featuring the SP32-S3 Module from Espressif, represents a robust and versatile solution tailored for Human-Machine Interface (HMI) applications. This comprehensive system amalgamates advanced technology components, including a powerful processor with inherent communication capabilities, a 5-inch LCD with a Resistive Touch Panel for optimal user interaction, and RS-485 communication support ideal for MODBUS interactions with a HOST Processor. Moreover, the HMI incorporates Isolated Digital Inputs for seamless sensor or switch integration, Analog Inputs supporting 0 – 10V and 4-20mA ranges with a 16-bit ADC for precise signal handling, and Transistor Outputs capable of driving 24V relays and generating PWM outputs. This rich feature set positions the NORVI HMI as a versatile, reliable, and adaptable platform suitable for a broad spectrum of industrial and automation scenarios, facilitating efficient data exchange, device control, and user interaction within various environments.


Buy Now: 

Or, Inquiry us at [email protected]



The ESP32-S3 microcontroller, renowned for its robustness and adaptability, emerges as an optimal and multifaceted solution for fabricating Human-Machine Interfaces (HMIs). Its intrinsic fusion of formidable processing capabilities, an extensive array of connectivity options, adaptable hardware interfacing capabilities, and fortified security features underscores its suitability. This versatile microcontroller’s applications transcend across multifarious industries, holding the promise of orchestrating seamless interactions between users and machines while fostering a culture of innovation within the realm of Human-Machine Interfaces. Harnessing the inherent advantages of the ESP32-S3, developers are empowered to craft intricate, highly responsive, and feature-laden HMIs meticulously tailored to cater to a wide spectrum of user needs and preferences.

Posted on Leave a comment

How to Interface 0-10V Analog Sensor with ESP32: A Comprehensive Guide

How to Interface 0-10V Analog Sensor with ESP32: A Comprehensive Guide

In the realm of industrial automation and control systems, interfacing a 0-10V Analog Sensor with ESP32 microcontroller is an essential requirement of systems. This requires attenuating 0 – 10V Analog signal to acceptable levels of microcontroller level ADC, in cases where higher accuracy is required, 16bit ADC of ADS1115 can be used.

Why 0-10V Analog Sensor with ESP32

If you’ve wanted a 0-10V Analog Sensor with ESP32. It is needed to follow the steps outlined in this article and be able to successfully connect the 0-10V analog sensor to the ESP32. After uploading the code and testing the setup, it was able to accurately measure the values and take action for transmit. This practical application not only helped to understand the process better but also highlighted the importance of using analog sensors with microcontrollers for real-world projects.

It’s a given that 0-10V industrial sensors are the stalwarts of the sensor family. Robust, reliable, and remarkably versatile, these sensors have been the backbone of industrial sensing for decades. Pairing them with the ESP32, a powerhouse in its own right with WiFi and Bluetooth capabilities, opens up possibilities that would make even the most seasoned engineer’s heart race.

Components Required

If you’re going to build a 0-10V Analog Sensor with ESP32, for that, You’ll need your trusty ESP32 board, a 0-10V analog sensor, a voltage divider or a level shifter (because ESP32 can’t handle 10V directly on its pins), and the usual suspects: resistors, breadboard, jumper wires, and a power supply. Quality components make for a quality project, so don’t skimp.

Circuit Diagram

Here’s where things get interesting. The ESP32 is capable but sensitive; its analog inputs can only tolerate up to 3.3V. So, we’ll need a voltage divider to step down the 0-10V signal to a more ESP32-friendly level. It has to remember the first time that a pin blew out by being overzealous with voltage. 


Coding for the ESP32 is a delightful challenge. You’ll need to calibrate your code to account for the voltage divider’s scaling. The ESP32 uses a 12-bit analog-to-digital converter, giving us values from 0 to 4095 for 0-3.3V, which we’ll map back to 0-10V. I’ve coded in various settings, but the exhilaration of seeing your code compile and run correctly never gets old.

Testing the 0-10V Analog Sensor with ESP32

Now comes the moment of truth, testing. Here, every connection, every line of code, and every calibration is put to the test. It’s more than just making sure things work; it’s about precision, it’s about reliability—it’s about the perfect interplay between hardware and software.

  • Uploading the Code

Uploading the code to the ESP32 is as straightforward as it is nerve-wracking. The anticipation builds with each progress bar increment. If all goes well, you’ll be greeted with a series of values in your serial monitor that reflect the real-world parameters your sensor is detecting.

  • Output

Watching the serial monitor tick off numbers as your sensor reacts to the environment is akin to a maestro conducting an orchestra. Each value is a note, each fluctuation a harmony. It’s not just numbers; it’s a symphony of data telling you a story of the physical world around you.

Insider Tip: Always monitor your sensor’s output before deploying it in the field. It’s the difference between a well-tuned instrument and a cacophony.


Interfacing a 0-10V Analog Sensor with ESP32 is a task that epitomizes the fusion of old-school robustness with cutting-edge technology. It’s a testament to an engineer’s ability to adapt, innovate, and overcome the challenges of a constantly evolving field. Go forth, interface with confidence, and may your sensors always read true.



NORVI IIOT series offers 0 – 10V compatible Analog Inputs, where you can get rid of the external attenuation networks and it has a 16 bit ADC resolution with higher accuracy. This makes ESP32 Applicable in industrial 0 – 10V measurement applications.  

So, if you need 0-10V Analog Sensor with ESP32, NORVI is the best solution.

Visit Now:

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on

Interfacing 24V Industrial Switches with ESP32: A Comprehensive Guide

Interfacing 24V Industrial Switches with ESP32: A Comprehensive Guide

In the realm of industrial automation, interfacing 24V Industrial Switches with ESP32 microcontrollers is a crucial task. These switches, widely used in industrial settings, operate at higher voltages compared to the typical logic levels of microcontrollers. The challenge lies in bridging the voltage gap and ensuring seamless communication between these switches and microcontrollers. This comprehensive guide aims to walk you through the process of interfacing 24V Industrial Switches with ESP32, exploring the necessary components, considerations, and steps involved.

Understanding 24V Industrial Switches

24V industrial switches are commonly employed in industrial environments due to their robustness and compatibility with industrial machinery. These switches often work at higher voltages and currents to handle the demanding conditions of industrial applications. However, their voltage levels are incompatible with most microcontrollers, which typically operate at 3.3V or 5V logic levels.

Challenges in Interfacing

The primary challenge when interfacing 24V industrial switches with microcontrollers like the ESP32 is the voltage compatibility issue. The ESP32, operating at 3.3V logic levels, cannot directly interface with 24V switches. This necessitates the use of additional components and techniques to bridge this voltage gap and ensure safe and reliable communication.

Components Required for Interfacing 24V Industrial Switches with ESP32

Four main components are required for interfacing 24V Industrial Switches with ESP32. Here are they below;

1. Optocoupler

An optocoupler, also known as an opto-isolator, serves as a crucial component to interface different voltage systems. It consists of an LED and a photodetector sealed within a lightproof housing. The input side of the optocoupler, connected to the 24V switch, isolates the higher voltage from the output side connected to the ESP32.

2. Resistors

Resistors are used to limit the current passing through the LED of the optocoupler, preventing damage due to excess current. Additionally, pull-up or pull-down resistors may be required to stabilize the signal and ensure reliable communication.

3. ESP32 Development Board

The ESP32 microcontroller board, known for its versatility and connectivity options, serves as the core processing unit for interfacing with the industrial switches.

4. Power Supply

A stable power supply unit capable of providing the required voltage levels for both the 24V industrial switches and the ESP32 board is essential for the proper functioning of the system.

Steps to Interface 24V Industrial Switches with ESP32

Step 1: Circuit Design

Design the interface circuit using the optocoupler to ensure electrical isolation between the 24V switch and the ESP32. Connect the output side of the optocoupler to the GPIO pins of the ESP32 board, allowing it to detect the state changes of the switch.

Step 2: Optocoupler Connections

Connect the input side of the optocoupler to the 24V industrial switch, ensuring proper polarity and current-limiting resistor placement to protect the optocoupler’s LED.

Step 3: Voltage Level Translation

Implement proper voltage level translation using resistors or level-shifting circuits to ensure that the ESP32 can safely interpret the signals from the 24V switch without causing damage.

Step 4: Software Configuration

Write the firmware or program for the ESP32 to interpret the signals received from the industrial switches via the optocoupler. Use GPIO interrupts or polling methods to detect state changes in the switches.

Step 5: Testing and Validation

Test the interfacing setup thoroughly to ensure proper functionality under various conditions. Verify the accuracy of signal detection and the response of the ESP32 to changes in the 24V switch states.

Safety Considerations

When working with higher voltages, observe proper safety precautions. Always disconnect power sources before making any circuit connections or modifications. Double-check connections and ensure that the circuit is properly isolated to prevent damage to the ESP32 or any connected devices.


Interfacing 24V Industrial Switches with ESP32 microcontrollers is critical to industrial automation. It’s possible to bridge the voltage gap and enable seamless communication between these components by employing optocouplers and proper circuitry design. Understanding the components involved, following proper circuit design practices, and implementing safety measures are essential for successfully interfacing 24V industrial switches with the ESP32, paving the way for efficient and reliable industrial automation systems.


ESP32 Industrial Controller with WIFI Digital 24V from NORVI Controllers are available to buy and can be customization based on your requirements, especially for 24V industrial switches with the ESP32 requirements.

Visit our product page now:

Or, Contact us at [email protected]

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on Leave a comment

Communicating with MODBUS Devices with ESP32 to power-up innovative Automation.

Communicating with MODBUS Devices with ESP32 to power-up innovative Automation

Learn how to unleash the power of industrial automation and IoT applications by leveraging MODBUS Devices with ESP32. Explore MODBUS RTU and TCP/IP protocols, hardware setups, and libraries for seamless integration. Discover why NORVI controllers stand out as a reliable MODBUS solution. Visit our product page for more details

Communicating via MODBUS Devices with ESP32 microcontroller opens up a world of possibilities for industrial automation, IoT applications, and control systems. MODBUS, a widely used communication protocol, allows various devices to exchange data straightforwardly and efficiently. The ESP32, with its powerful capabilities and built-in support for various communication protocols, provides an excellent platform to interface with MODBUS-enabled devices.

Understanding MODBUS Protocol

MODBUS is a serial communication protocol developed in the late 1970s for industrial applications. It has since evolved into a widely adopted standard for connecting electronic devices in supervisory control and data acquisition (SCADA) systems, industrial automation, and other applications.

The protocol operates on two main variants: MODBUS RTU (Remote Terminal Unit) and MODBUS TCP/IP (Transmission Control Protocol/Internet Protocol). RTU uses serial communication (RS-232 or RS-485), while TCP/IP operates over Ethernet networks.

MODBUS follows a client-server architecture, where a master device (client) initiates requests to read or write data to slave devices (servers). Each device in a MODBUS network has a unique address to enable communication.

MODBUS Devices with ESP32

MODBUS Devices with ESP32

The ESP32 is a powerful and versatile microcontroller equipped with Wi-Fi, Bluetooth, and various I/O interfaces. To communicate with MODBUS devices, the ESP32 can use its UART (Universal Asynchronous Receiver-Transmitter) for MODBUS RTU communication or its Wi-Fi module for MODBUS TCP/IP communication. Therefore, MODBUS Devices with ESP32 is vital.


  • Hardware Setup:
    • Connect RS-485 devices in multidrop to the RS-485 terminal of the NORVI Controller.  
  • Software Implementation:
    • Utilize existing libraries like “ModbusMaster” or “Modbus RTU” for Arduino/ESP-IDF to handle MODBUS communication.
    • Configure the ESP32’s UART pins and baud rate to match the settings of the MODBUS device.
    • Implement read and write functions to communicate with MODBUS slaves using the chosen library.

Using ESP32’s Wi-Fi for MODBUS TCP/IP

  • Wi-Fi Setup:
    • Connect the ESP32 to the local Wi-Fi network to establish an internet connection.
  • Library and Implementation:
    • Employ libraries like “ModbusIP_ESP8266” or “ESP8266ModbusServer” adapted for the ESP32.
    • Set up the ESP32 as a MODBUS TCP/IP server or client, depending on the application requirements.
    • Implement read and write functions to communicate with other MODBUS devices over Wi-Fi.

Considerations and Best Practices

  • Addressing: Ensure correct addressing of MODBUS devices to access specific data registers.
  • Error Handling: Implement error handling mechanisms to manage communication failures or timeouts.
  • Data Validation: Validate the received data to ensure integrity and accuracy.
  • Security: Implement security measures, especially when using Wi-Fi, to prevent unauthorized access to the network and devices.

WHY NORVI as a MODBUS Solution?

Our NORVI controllers have built-in TTL to RS-485 converters.. So the RS-485 devices can be connected directly to the NORVI Controllers. RS-485 on the NORVI Controller can be used to communicate with external sensor networks and PLCs.

VISIT OUT Product Page Now:


The ESP32’s flexibility and capabilities make it an excellent platform for interfacing with MODBUS-enabled devices. Whether using UART for MODBUS RTU or Wi-Fi for MODBUS TCP/IP communication, the ESP32 can efficiently handle data exchange, enabling seamless integration into various industrial and IoT applications. Understanding the nuances of the MODBUS protocol and leveraging appropriate libraries and configurations is key to successful communication between MODBUS Devices with ESP32, facilitating efficient control and monitoring in diverse settings.

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on Leave a comment

Arduino Digital Inputs vs Industrial Arduino Inputs :Unleashing the Potency for Innovative Projects

Arduino Digital Inputs vs Industrial Arduino Inputs :Unleashing the Potency for Innovative Projects

Discover how Arduino’s accessibility and adaptability have transformed microcontroller programming for hobbyists, students, and enthusiasts. Dive into the crucial realm of Arduino Digital Inputs vs Industrial Arduino Inputs, exploring their pivotal role and comparing them.

Arduino has revolutionized the automation world by making microcontroller programming accessible to hobbyists, students, and enthusiasts. Its ease of use and versatility have spurred widespread adoption for countless projects. One critical aspect of using Arduino boards involves understanding digital inputs and their applications, particularly when comparing them to inputs found in industrial-grade Arduino counterparts.

Understanding Arduino Digital Inputs

Arduino boards are equipped with an array of digital pins that function flexibly as either inputs or outputs. Specifically, digital inputs perform the pivotal task of interpreting voltage levels, determining the presence of either a HIGH or LOW signal. This adaptability enables them to effectively detect and process signals emanating from a diverse range of sources, including switches, sensors, or other digital devices.

The versatility of Arduino’s digital inputs is a key factor contributing to their widespread applicability across various domains. From facilitating straightforward robotics projects to aiding in the automation of household systems and serving as integral components in educational initiatives, these inputs prove their utility in a multitude of scenarios. Their functionality extends to tasks such as discerning the status of buttons, capturing motion data through sensors, or efficiently receiving signals transmitted by other digital devices.

Moreover, their ease of integration into projects of varying complexities renders them indispensable tools for hobbyists, students, and enthusiasts exploring the realms of electronics and programming. The simplicity with which these inputs can be employed to interface with an extensive array of sensors and devices amplifies their significance in enabling innovation and experimentation within the Arduino ecosystem.

In essence, the adaptability and multifaceted nature of Arduino’s digital inputs not only cater to a wide spectrum of applications, including basic to moderately complex projects, but also serve as foundational elements fostering learning, exploration, and creativity in the realm of microcontroller-based electronics.

Advantages of Arduino Digital Inputs

  • Ease of Use: The user-friendly nature of Arduino’s digital inputs is a key attribute that caters to beginners, establishing them as an ideal choice for entry-level projects. Their straightforward configuration and intuitive setup contribute significantly to simplifying the initial learning curve for individuals new to electronics and programming. This accessibility empowers novices to delve into the world of microcontrollers with confidence, fostering a sense of accomplishment and encouraging further exploration and skill development.
  • Cost-Effectiveness: Another notable advantage lies in the cost-effectiveness of Arduino boards, which serve as a gateway for hobbyists to experiment without imposing a substantial financial burden. These boards are relatively affordable, ensuring accessibility to a wider demographic and encouraging experimentation and innovation without the constraints of high initial investments. This affordability encourages creativity, enabling enthusiasts to explore various concepts, test ideas, and bring their projects to life without incurring exorbitant expenses.
  • Versatility: Moreover, the versatility exhibited by these digital inputs is truly remarkable. Their compatibility with a vast spectrum of sensors and devices extends the horizons of project possibilities, allowing for diverse applications across multiple domains. Whether integrating with temperature sensors, motion detectors, or communication modules, the adaptability of Arduino’s digital inputs facilitates the creation of a wide array of innovative projects, offering endless opportunities for experimentation and customization.
  • Community Support: The robust online community surrounding Arduino significantly contributes to its appeal. This vast network provides an abundance of resources, including tutorials, forums, and extensive libraries. Such comprehensive support systems are invaluable assets for users at all skill levels. Beginners benefit from step-by-step tutorials guiding them through their initial projects, while more experienced users can engage in discussions, seek solutions to complex issues, and access a wealth of shared knowledge, further enriching their understanding and capabilities.

Industrial Arduino Inputs: A Different League

Industrial-grade Arduino boards, such as those produced by reputable brands like Siemens, PLCNext, or Industrial Shields, stand in stark contrast to their standard counterparts, as they are purposefully crafted to withstand the rigors of more demanding and rigorous environments. These specialized boards are meticulously designed to cater to the unique and stringent demands prevalent in industrial settings, distinguishing themselves with their superior durability, reliability, and precision.

One of the hallmark features of these industrial-grade Arduino boards is their inputs, which are engineered with a specific focus on meeting the exacting standards characteristic of industrial applications especially Industrial Arduino Inputs. Unlike standard Arduino inputs, which are adept at serving a broad range of projects, these specialized inputs are purpose-built to operate flawlessly amidst the challenging conditions prevalent in industrial environments.

In industrial settings, reliability is paramount, and these boards are meticulously crafted to ensure consistent performance even in the face of harsh conditions. They boast heightened resilience against temperature fluctuations, electrical noise, and voltage variations, factors that are common in industrial setups. This robustness ensures uninterrupted functionality, mitigating the risk of downtime and potential losses associated with equipment failures.

Durability is another defining characteristic of these industrial-grade boards. Components utilized in their construction are chosen for their ruggedness, ensuring prolonged and reliable operation in challenging and often unforgiving environments. The robust build quality enables these boards to endure harsh conditions where standard electronics might falter, providing a reliable backbone for critical industrial processes.

Furthermore, precision and accuracy are crucial aspects addressed in the design of Industrial Arduino Inputs. They offer superior accuracy in signal readings, a vital requirement for applications that demand precise measurements and high-level accuracy. This attribute makes them indispensable in industries where precise data acquisition is integral, such as in automation, process control, or monitoring systems.

Moreover, many of these specialized industrial-grade Arduino boards undergo stringent certification processes, adhering to industry standards and safety regulations. Compliance with these standards ensures not only reliability but also safety in professional industrial settings, instilling confidence in their deployment for critical applications.

Characteristics of Industrial Arduino Inputs

The distinguishing characteristics of Industrial Arduino Inputs encompass a range of features meticulously tailored to meet the exacting demands of industrial applications, setting them apart from their standard counterparts. These specialized inputs are engineered to deliver unparalleled performance, resilience, and precision in challenging and high-stakes industrial environments.

  • Reliability: This stands as a cornerstone attribute of these industrial inputs, underpinning their ability to function consistently amidst the harsh conditions prevalent in industrial settings. Specifically constructed to endure extreme temperature variations, combat electrical noise, and tolerate voltage fluctuations, these inputs exhibit an enhanced tolerance to environmental stresses. This robustness ensures unwavering performance, minimizing the risk of malfunctions or disruptions even in the face of adverse conditions.
  • Durability: This is another critical facet that defines the essence of industrial-grade Arduino inputs. These inputs are meticulously crafted using components renowned for their sturdiness and resilience. The choice of rugged materials and construction techniques empowers these inputs to withstand prolonged exposure to challenging environments, guaranteeing sustained and reliable operation over extended periods. This durability is a cornerstone for industries where equipment longevity is paramount to maintain uninterrupted processes.
  • Precision and Accuracy: Precision and accuracy in signal readings represent pivotal aspects addressed in the design and calibration of industrial-grade Arduino inputs. These specialized inputs are engineered with a heightened emphasis on delivering superior accuracy, making them indispensable for applications that mandate precise data acquisition. Their ability to provide meticulous and reliable measurements is pivotal in industries such as manufacturing, quality control, and scientific instrumentation.
  • Certifications: Compliance with industry standards and certifications is a hallmark feature of many industrial-grade Arduino inputs. These inputs undergo rigorous testing and validation processes to ensure adherence to established standards and safety regulations. This compliance not only underscores their reliability but also guarantees their suitability for deployment in professional settings where adherence to industry protocols is non-negotiable.

Choosing Between the Two

The choice between standard Arduino digital inputs and Industrial Arduino Inputs largely depends on the project’s requirements:

  • For hobbyist, educational, or prototyping purposes where cost-effectiveness and ease of use are prioritized, standard Arduino digital inputs are sufficient.
  • In industrial settings or projects demanding high reliability, durability, and adherence to specific regulations, industrial-grade Arduino inputs are the preferred choice.


Arduino digital inputs have democratized electronics, empowering countless enthusiasts to explore their creativity. However, when it comes to industrial applications with stringent reliability and durability demands, specialized Industrial Arduino Inputs offer the necessary robustness and precision required for such environments. Understanding the specific needs of a project is crucial in determining which type of Arduino inputs to employ, ensuring optimal performance and reliability in diverse applications.

Programmable IoT Devices

NORVI offers ESP32-based PLC powered by Arduino and offers Industrial Arduino inputs with many varieties for industrial automation. Visit our product page now:

Or, Contact us at [email protected]


Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on Leave a comment

Building a Low-cost HMI with ESP32-S3 Chip & LVGL for Innovative Projects

Building a Low-cost HMI with ESP32-S3 Chip & LVGL for Innovative Projects

Low-cost HMI can be used for your innovative projects. Wondering how to choose and what are their features. Learn through this article.

The world of embedded systems has been witnessing a revolutionary transformation, marked by innovations that redefine the boundaries of technology. At the forefront of this evolution stands the NORVI ESP32 HMI, an ingenious fusion of the ESP32-S3 microcontroller, a versatile 5-inch TFT LCD, and the dynamic LVGL Graphics Library. This confluence presents an alluring solution for developers and enthusiasts seeking to create cost-effective yet high-performance Human-Machine Interfaces (HMIs).

Key 3 Features of Low-cost HMI

A Low-cost HMI (Human-Machine Interface) solution boasts three fundamental components.

Firstly, it integrates the ESP32-S3 Microcontroller, esteemed for its robust capabilities in handling IoT applications, equipped with Wi-Fi, Bluetooth, and a rich set of peripherals. Secondly,  it incorporates an 8-bit RGB 5-inch LCD complemented by a touch panel, offering a cost-effective yet visually engaging display solution, ideal for various interactive applications. Lastly, leverages the LVGL (LittlevGL) Graphics Library, renowned for its efficiency in creating intuitive user interfaces across diverse embedded systems. This amalgamation delivers an affordable yet powerful HMI platform suitable for numerous projects requiring graphical user interfaces and touch interaction. These Low-cost HMI features will be discussed one by one now.

Unveiling the ESP32-S3 Microcontroller

  • As the first feature of Low-cost HMI,  ESP32-S3 microcontroller can be identified.
  • The NORVI ESP32 HMI is based on the ESP32-S3 microcontroller, which has 45 physical GPIO pins. It utilizes 20 GPIO pins for the display and the majority of the remaining pins for various functions, including digital inputs, transistor outputs, and communication.
  • ESP32-S3 is best for low-power applications that require advanced Wi-Fi and Bluetooth capabilities.
  • ESP32-S3 is a newer and more advanced microcontroller, and as such, it is generally more expensive than ESP32. But ESP32-S3 is an enhanced variant of the ESP32 microchip. Compared with ESP32, ESP32-S3 supports larger, high-speed octal SPI flash, and PSRAM with configurable data and instruction cache. Prices for ESP32-S3 can range from around $5 to $15 per unit, depending on the specific model and features.
  • However, the NORVI ESP32 HMI has an integrated ESP32-S3 module, serving both UI functions and communication purposes. This integrated approach lends the NORVI ESP32 HMI a cost-effective and higher performance edge compared to the others.

8-bit RGB 5-inch LCD with touch panel: A Visual Delight

  • Second Low-cost HMI feature is LVGL 5inch LCD Display with 8-bit RG and resistive touch.
  • NORVI ESP32 HMI offers a crystal-clear 5-inch TFT LCD with resistive touch technology, ensuring a user-friendly and interactive experience.
  • TFT display has a resolution of 800×480 pixels and a high contrast ratio of 500:1, making it capable of rendering deep blacks and vibrant colors.  It also has a high brightness of 450cd/m2, making it suitable for use in both indoor and outdoor environments.
  • TFT display comes with optional resistive touch screen capability, allowing users to interact with the display through touch. This option allows for precise touch input using a stylus or finger.
  • 8-bit RGB is used to interface with large color displays. It sends 8 bits of data for each of the three colors, Red Green, and Blue every clock cycle. Since there are 24 bits of data transmitted every clock cycle, at clock rates up to 50 MHz, this interface can drive much larger displays at video frame rates of 60 Hz and up.RGB is Low-cost due to technology maturity but High performance.
  • Prices for a 5-inch TFT LCD can range from around $19 to $20 per unit, depending on the specific model and features.

Powering Creativity with LVGL Graphics Library

  • Third, the Low-cost HMI feature is LVGL library support which makes it more useful.
  • LVGL is the most popular free and open-source embedded graphics library that offers a wide range of features that can be used to create beautiful UIs for any display type. LVGL’s graphical elements are fully customizable.
  • It provides building blocks for creating user interfaces on embedded systems and it has advanced graphics features such as animation, also it supports a variety of input devices, including touch pads, mice, keyboards, and encoders. 
  • Especially, the library is hardware-independent, meaning it can be used with any microcontroller or display. 

Embracing the Future of Human-Machine Interaction

The ever-expanding landscape of embedded systems, the NORVI ESP32 HMI stands as a testament to the innovation driving the industry forward as positioning by Low-cost HMI. In the realm of creating low-cost Human-Machine Interfaces (HMIs), the fusion of the ESP32-S3 microcontroller with NORVI ESP32 HMI, alongside the integration of a versatile 5-inch TFT LCD and the dynamic LVGL Graphics Library, defines an enticing solution for developers and enthusiasts.Whether an experienced developer or a hobbyist embarking on a new project, this powerful combination offers the tools needed to bring ideas to life. In a world where seamless interaction between humans and machines is paramount, the NORVI ESP32 HMI and its companions pave the way for a new era of user-friendly and cost-effective solutions.                                     

Low-cost HMI is now available to buy from NORVI.

Visit the Product Page or, Contact Us at [email protected]

Stay Connected to get updated news on LVGL for HMI: Facebook : LinkedIn : Twitter: YouTube

Posted on

Understanding Expansion Modules for PLCs for Industrial Innovative Automation

Understanding Expansion Modules for PLCs for Industrial Innovative Automation

Explore the world of Expansion Modules for PLCs (Programmable Logic Controllers) and their pivotal role in enhancing industrial automation. Learn about various expansion types, including I/O, communication, specialized functions, analog I/O, power supply modules, and NORVI’s advanced expansion lineup.

What is an Expansion Modules for PLCs?

Expansion Modules for PLCs (Programmable Logic Controller) are additional hardware components that can be connected to a base or main PLC unit to expand its capabilities and functionality. These modules allow the PLC system to accommodate more input/output (I/O) points, various communication protocols, additional memory, or specialized functionalities based on specific requirements.

Here are some common types of Expansion Modules for PLCs:

  • I/O Expansion Modules: These modules increase the number of input or output points of the PLC. They can be digital or analog and allow the connection of more sensors, actuators, or other devices to the PLC system.
  • Communication Modules: These enable the PLC to communicate with other devices or systems using different communication protocols such as Ethernet/IP, Modbus, Profibus, DeviceNet, etc. They facilitate data exchange between the PLC and external devices like HMIs (Human Machine Interfaces), SCADA (Supervisory Control and Data Acquisition) systems, or other PLCs.
  • Specialized Function Modules: Some PLCs offer specialized expansion modules designed for specific functions like high-speed counting, motion control, temperature control, PID (Proportional-Integral-Derivative) loops, etc. These modules enhance the PLC’s capability to handle particular tasks efficiently.
  • Analog I/O Modules: These modules handle analog signals (voltage or current) and are used for applications that require precise control or monitoring of variables such as temperature, pressure, flow rate, etc.
  • Power Supply Modules: Sometimes, additional power supply modules are used to provide more power to the PLC system or to isolate specific sections of the PLC for safety or operational purposes.

Expansion modules allow users to customize the PLC system based on the specific needs of their applications without having to replace the entire PLC unit. They provide flexibility, scalability, and the ability to adapt to changing requirements in industrial automation and control systems.

NORVI Expansion Module

Expansion Modules for PLCs

NORVI prides itself on its core ethos of seamless connectivity and unmatched expandability, setting the benchmark in the realm of industrial automation. Leveraging the Expansion port of NORVI Controllers heralds a pivotal moment in unlocking the full potential of these robust systems. They offer various types of Expansion Modules for PLCs.

The comprehensive lineup of expansion modules seamlessly interfaces with NORVI IoT controllers through versatile I2C and UART connections. This integration empowers users to augment the NORVI Controller’s functionalities without necessitating extensive customizations. NORVI’s commitment to delivering cutting-edge technology manifests in its unwavering reliability tailored explicitly for the exacting demands of industrial applications, solidifying its standing as a premier IoT hardware manufacturer on a global scale.

Among the array of expansion modules, NORVI offers a spectrum of choices including NB-IoT, LoRa, and sophisticated analog modules. These expansions not only broaden the horizons of connectivity but also enrich the capabilities of the NORVI Controller, fostering a dynamic ecosystem adaptable to the diverse needs of industrial automation.

These are the expansion ports:

  • TXD0
  • IO33
  • RXD0
  • Not Connected
  • IO32
  • IO0 BOOT
  • IO17 SCL
  • Not Connected
  • IO16 SDA
  • Ground

Does NORVI have Communication Expansions?

EX-LR4XX and EX-NB95X, the cutting-edge communication expansion modules designed to elevate the capabilities of NORVI controllers to unprecedented levels.

The EX-LR4XX module revolutionizes communication with its LoRa technology. Featuring the state-of-the-art RYLR896 transceiver, this module boasts ultra-long-range spread spectrum communication coupled with exceptional interference immunity. Notably certified by the NCC and FCC, it ensures reliability and compliance. Equipped with the Semtech SX1276 Engine, a high-efficiency Power Amplifier, and a remarkable 127 dB Dynamic Range RSSI, it establishes unparalleled reliability while minimizing current consumption. This versatile module offers both built-in and external antenna options, providing flexibility in installation and enhancing signal transmission. Choose between the REYAX RYLR896 operating at 868/915 MHz frequencies or the REYAX RYLR406 spanning 426/433/470 MHz frequencies for optimal performance.

On the other hand, the EX-NB95X module represents the pinnacle of NB-IoT communication. Leveraging the BC95-G, it offers an ultra-low-power communication interface tailored specifically for NORVI controllers. This module’s compatibility with global bands makes it a versatile solution applicable worldwide, delivering superlative sensitivity and performance. Seamlessly interfacing with NORVI controllers through an I2C interface, ensures effortless integration while maintaining extremely low power consumption. Furthermore, its incorporation of Embedded Internet Services Protocols and Quectel Enhanced AT Commands facilitates efficient and reliable communication. The module supports both built-in and external antenna options, providing users with flexibility in deployment and ensuring optimal connectivity in diverse settings.

Whether opting for the groundbreaking LoRa capabilities of the EX-LR4XX or the futuristic NB-IoT advancements of the EX-NB95X, NORVI’s expansion modules guarantee unmatched connectivity, reliability, and adaptability, setting new standards in industrial communication.

Does NORVI have Analog Inputs Expansions?

Certainly, NORVI extends its range of expansion modules with the NORVI-EX-ANV01 and NORVI-EX-ANI01, unleashing unparalleled analog input capabilities that redefine precision in industrial data acquisition.

The NORVI-EX-ANV01 stands out with its provision of four 0-10V analog inputs. Leveraging the cutting-edge ADS1115 I2C ADC, this module epitomizes accuracy in reading analog channels. What sets it apart is the inclusion of an analog attenuation network, a sophisticated feature that seamlessly converts the 0-10V input range to levels acceptable for the ADS1115. This precision-engineered module ensures precise, reliable readings across the spectrum of analog inputs, facilitating seamless integration into diverse industrial applications.

Meanwhile, the NORVI-EX-ANI01 delivers exceptional versatility with its four 4-20mA analog inputs. Employing the ADS1115 I2C ADC for analog channel readings, this module mirrors the precision and accuracy of its counterpart. Similar to the NORVI-EX-ANV01, it also integrates an analog attenuation network adept at converting 0-10V signals to acceptable levels for the ADS1115. This innovation ensures a seamless transition from varying analog signals to precise digital readings, enabling industries to monitor and control processes with unmatched accuracy and reliability.

Both modules, whether the NORVI-EX-ANV01 with its 0-10V analog inputs or the NORVI-EX-ANI01 with its 4-20mA analog inputs exemplify NORVI’s commitment to providing cutting-edge solutions for industrial data acquisition. These expansion modules not only offer unparalleled accuracy but also ensure seamless compatibility and integration with NORVI controllers, empowering industries with the precision they require for critical operations.

Does NORVI have Digital Inputs Expansions?

Absolutely, NORVI introduces a range of expansion modules – NORVI-EX-I4, NORVI-EX-I8, and NORVI-EX-I16, designed to enhance digital input capabilities, catering to a spectrum of industrial automation needs with remarkable versatility and precision.

The NORVI-EX-I4 offers a sophisticated solution with its provision of four sink/source digital inputs. Leveraging the state-of-the-art MCP23008 I2C I/O Expander provider, this module ensures seamless and precise reading of digital inputs. Furthermore, the digital inputs come equipped with internal pull-up resistors, bolstering reliability and accuracy in signal acquisition. This module serves as a reliable cornerstone for diverse industrial setups, providing seamless integration and superior performance.

Moving up the ladder, the NORVI-EX-I8 raises the bar by delivering eight sink/source digital inputs, maintaining the same precision and reliability as its predecessors. Employing the MCP23008 I2C I/O Expander provider, this module is engineered to read digital inputs with unparalleled accuracy. With internal pull-up resistors ensuring signal stability, this module proves to be an ideal solution for industries requiring a higher number of digital input channels, ensuring seamless integration and robust performance.

Meanwhile, the NORVI-EX-I16 sets a new standard by offering an extensive array of sixteen sink/source digital inputs. Leveraging the MCP23016 I2C I/O Expander provider, this module significantly expands the capacity for digital inputs without compromising on accuracy or reliability. Just like its counterparts, this module ensures precise reading of digital inputs with internally pulled-up resistors, making it a robust choice for large-scale industrial applications demanding higher channel capacity and steadfast performance.

Whether opting for the NORVI-EX-I4, NORVI-EX-I8, or NORVI-EX-I16, these expansion modules epitomize NORVI’s commitment to providing advanced digital input solutions, ensuring seamless integration and precise, reliable performance in various industrial environments.

Does NORVI have Transistor Output Expansions?

NORVI proudly presents the NORVI-EX-Q4, NORVI-EX-Q8, and NORVI-EX-Q16 expansion modules, representing a leap forward in providing comprehensive open collector output solutions tailored for diverse industrial applications, ensuring precision, reliability, and seamless integration.

Starting with the NORVI-EX-Q4, this module delivers four open collector outputs, offering a robust solution for controlling external devices. Employing the MCP23008 I2C I/O Expander provider for precise transistor output writing, this module ensures precise control over various connected devices. Capable of handling voltages up to 36V DC, these outputs provide the flexibility and reliability required in industrial settings, ensuring seamless integration and efficient performance.

Moving forward, the NORVI-EX-Q8 expands its capabilities with eight open collector outputs, maintaining the same precision and reliability as its predecessor. Utilizing the MCP23008 I2C I/O Expander provider, this module empowers users to exert precise control over a greater number of external devices. Supporting voltages up to 36V DC, these outputs cater to diverse industrial needs, ensuring optimal control and reliability across varied applications.

Moreover, the NORVI-EX-Q16 elevates the standard by offering an impressive sixteen open collector outputs. Employing the MCP23017 I2C I/O Expander provider, this module significantly expands the capacity for open collector outputs while maintaining precision and reliability. Capable of handling voltages up to 36V DC, these outputs provide unmatched flexibility and control over a myriad of external devices in large-scale industrial setups, ensuring seamless integration and steadfast performance.

Whether opting for the NORVI-EX-Q4, NORVI-EX-Q8, or NORVI-EX-Q16, these expansion modules exemplify NORVI’s commitment to delivering advanced open collector output solutions. Ensuring seamless integration, precision control, and steadfast performance, these modules cater to diverse industrial requirements, setting new benchmarks for reliability and versatility in industrial automation.

Does NORVI have Relay Output Expansions?

Introducing the NORVI-EX-R8 and NORVI-EX-R16, these expansion modules redefine control and operation with relay outputs, embodying precision, reliability, and adaptability in industrial automation.

The NORVI-EX-R8 leads the way with its provision of eight relay outputs, establishing itself as a cornerstone for seamless relay control. Employing the MCP23008 I2C I/O Expander provider, this module ensures precise operation of relay outputs. With relay outputs configured as normally open, this module provides a versatile solution for controlling various external devices. This meticulously designed module guarantees reliability and accuracy in relay control, catering to diverse industrial needs with efficiency and precision.

Meanwhile, the NORVI-EX-R16 elevates the standard by offering an expansive array of sixteen relay outputs, enhancing the scope and control capabilities for industrial applications. Leveraging the MCP23016 I2C I/O Expander provider, this module extends the capacity for relay outputs without compromising on precision or reliability. Configured similarly with relay outputs as normally open, this module sets a new benchmark for seamless relay operation, catering to larger-scale industrial setups with efficiency and unwavering accuracy.

Whether opting for the NORVI-EX-R8 or the NORVI-EX-R16, these expansion modules epitomize NORVI’s commitment to delivering advanced relay output solutions. With meticulous design, precision control, and seamless integration, these modules provide unparalleled reliability and control over external devices in diverse industrial settings, setting new standards for efficiency and adaptability in industrial automation.



The evolution of industrial automation is fueled by the adaptability and scalability offered by Expansion Modules for PLCs (Programmable Logic Controllers). These crucial hardware components enable a PLC system to transcend its inherent limitations, catering to the ever-changing demands of industrial environments.

From I/O expansion modules that broaden connectivity to communication modules facilitating seamless data exchange, specialized function modules enhancing specific task handling, analog I/O modules ensuring precision control, and power supply modules for enhanced operational safety – these expansion units collectively form the backbone of a versatile and adaptable PLC system.

The innovation doesn’t stop there. Manufacturers like NORVI have pushed the boundaries of expansion technology, offering a comprehensive suite of expansion modules designed to meet the unique demands of industrial automation. Whether it’s NORVI’s communication expansions like LoRa or NB-IoT, analog input expansions delivering unmatched accuracy, or the prowess of digital input, transistor output, relay output expansions providing precise control, these modules redefine industry standards, promising reliability, adaptability, and efficiency.

The integration of Expansion Modules for PLCs marks a paradigm shift, empowering industries to tailor their automation setups according to specific requirements without the need for full system replacement. As technology advances, the scope and capabilities of these modules continue to expand, ushering in an era of unparalleled customization and innovation in industrial automation. Harnessing the potential of expansion modules is not merely an option; it’s a strategic imperative for industries aiming to stay at the forefront of modern automation.

Visit our product page now to buy ESP32-based Expansion Modules:

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on

Innovative Industrial Automation: The Versatile Applications of ESP32-based PLC with Ethernet Connectivity

ESP32-based PLC with Ethernet Connectivity

Why ESP32-based PLC with Ethernet Connectivity? In today’s dynamic industrial landscape, the demand for efficient and reliable automation solutions continues to grow. The advent of technologies like the ESP32-based PLC with Ethernet Connectivity has revolutionized the realm of industrial automation. These powerful devices offer a wide array of applications, transforming the way industries operate and optimize their processes.

What is Ethernet?

Ethernet is a widely used technology that defines a system for connecting a group of computers and other devices in a local area network (LAN). It was developed in the 1970s by Xerox Corporation’s Palo Alto Research Center (PARC) and later standardized by the Institute of Electrical and Electronics Engineers (IEEE).

Ethernet operates on the principles of packet-switching and uses a set of protocols to enable devices within the same network to communicate with each other. It involves physical cabling (such as twisted pair, fiber optic, or coaxial cable) and a series of rules and procedures for transmitting data between connected devices.

Some key aspects of Ethernet include:

  • Data Transmission: Ethernet networks use frames to transmit data between devices. These frames contain information about the sender, receiver, type of data, and error-checking bits.
  • Speeds: Ethernet has evolved over the years to support various speeds, ranging from the original 10 megabits per second (Mbps) to 100 Mbps, 1 gigabit per second (Gbps), 10 Gbps, 40 Gbps, 100 Gbps, and even higher.
  • Topologies: Ethernet supports various network topologies, including star, bus, and ring configurations. The most common nowadays is the star topology, where devices connect to a central switch or router.
  • Standardization: IEEE 802.3 defines the standards for Ethernet, ensuring compatibility and interoperability between devices from different manufacturers.
  • Usage: Ethernet is widely used in homes, businesses, data centers, and various industries as the primary means of local area networking.

Ethernet has undergone numerous advancements and improvements, allowing for faster speeds, increased reliability, and greater flexibility in network setups. It remains one of the most prevalent and fundamental technologies for networking, enabling communication between devices within a local network environment.

ESP32-based PLC with Ethernet

An ESP32-based PLC with Ethernet Connectivity can offer several advantages and capabilities due to the combination of the ESP32 microcontroller and Ethernet connectivity:

  • Networking Capabilities: Ethernet connectivity enables the PLC to communicate with other devices, such as computers, servers, sensors, and other PLCs, over a local area network (LAN). This allows for data exchange, control, and monitoring of industrial processes or automation systems.
  • Reliability and Speed: Ethernet provides a stable and reliable communication platform with high-speed data transfer rates. This is crucial in industrial settings where real-time data processing and communication are required for efficient operations.
  • Integration with Existing Infrastructure: Many industrial environments already have established Ethernet-based networking infrastructure. Using an ESP32-based PLC with Ethernet allows seamless integration into these systems without requiring significant modifications or additional hardware.
  • Remote Monitoring and Control: With Ethernet connectivity, the ESP32-based PLC can enable remote monitoring and control functionalities. This means that operators or engineers can access and manage the system from a central location, improving efficiency and reducing the need for physical presence on the factory floor.
  • Scalability and Flexibility: Ethernet-equipped PLCs can easily scale to accommodate larger systems or expand functionalities by leveraging network capabilities. They can also interact with a variety of devices and systems, providing flexibility in industrial automation setups.
  • Security Features: Ethernet-based communication can leverage various security protocols and measures to ensure data integrity and prevent unauthorized access, enhancing the overall security of industrial networks.
  • Compatibility and Standardization: Ethernet is a well-established and standardized networking technology, ensuring compatibility with a wide range of devices and systems, and facilitating easier integration and interoperability.

Why Ethernet stands out?

While other connectivity options like serial communication (RS-232, RS-485), Fieldbus protocols (Profibus, Modbus), wireless technologies (Wi-Fi, Bluetooth, Zigbee), or proprietary industrial protocols have their own merits, Ethernet stands out due to its speed, reliability, scalability, and standardization, making it an excellent choice for connecting PLCs in modern industrial automation setups. Additionally, advancements in Ethernet technology continue to enhance its capabilities, making it more adaptable and suitable for diverse industrial applications.

ESP32-based PLC with Ethernet Connectivity enhances its capabilities, enabling robust communication, remote access, scalability, and integration into existing industrial networks, thereby improving the efficiency and effectiveness of industrial automation and control systems.

Applications in Industrial Automation

There are various applications that can perform using ESP32-based PLC with Ethernet Connectivity effectively. Find below:

1. Factory Automation and Control

ESP32-based PLCs with Ethernet play a pivotal role in controlling and supervising industrial machinery and processes. They enable precise and real-time control of production lines, ensuring seamless operation, minimizing downtime, and optimizing overall efficiency. These PLCs manage diverse tasks, including motor control, conveyor systems, and robotic operations.

2. Remote Monitoring and Management

Ethernet-equipped PLCs empower remote monitoring and management of industrial setups. Engineers and operators can access critical data, monitor machine performance, and troubleshoot issues from a centralized location. This capability streamlines maintenance procedures, enhances operational visibility, and facilitates timely interventions, reducing maintenance costs and increasing uptime.

3. Integration into Existing Networks

The compatibility of ESP32-based PLCs with Ethernet facilitates easy integration into existing industrial networks. They seamlessly communicate with other devices, such as sensors, Human Machine Interfaces (HMIs), and servers, leveraging standardized Ethernet protocols. This integration optimizes workflow, data exchange, and interoperability among various components of the automation ecosystem.

4. Data Acquisition and Analysis

These PLCs efficiently collect and process data from sensors and connected devices. With Ethernet connectivity, they transmit this data to central servers or cloud-based platforms for in-depth analysis. By harnessing this data, industries gain valuable insights into production trends, anomalies, and predictive maintenance, empowering informed decision-making.

5. Enhanced Security Measures

Ethernet-based communication in ESP32-based PLCs incorporates robust security measures, safeguarding sensitive industrial data and preventing unauthorized access. Encrypted communication protocols and authentication mechanisms ensure the integrity and confidentiality of data exchanged within the network.

NORVI ESP32-based PLC with Ethernet

The marriage of ESP32-based PLC with Ethernet Connectivity heralds a new era in industrial automation. These versatile devices offer a spectrum of applications, revolutionizing manufacturing, process control, and operational efficiency. By enabling seamless connectivity, precise control, remote management, and enhanced data analysis, these PLCs are pivotal in shaping the future of industrial automation.

As industries continue to evolve, embracing the capabilities of ESP32-based PLC with Ethernet Connectivity will undoubtedly remain a cornerstone in achieving higher productivity, reduced downtime, and smarter decision-making in the industrial landscape.

Visit our product page now to buy ESP32-based PLC with Ethernet:

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

#NORVI #ESP32 #ESP32PLC #Ethernet #EthernetAutomation #IndustrialESP32 #PLCTechnology #AutomationSolutions #SmartManufacturing #IoTIndustrial #ConnectedPLC #DigitalFactory #Industry40 #EthernetPLC #AdvancedAutomation #ESP32Innovation #EfficientPLC #ReliableAutomation

Posted on Leave a comment

Why should choose ESP32-based PLC with GSM to Enhanced Connectivity?

ESP32-based PLC with GSM

Discover GSM connectivity’s pivotal role and its integration in PLCs, and How ESP32-based PLC with GSM stands out. Explore More through this article. 

What is GSM Connectivity?

GSM logo

GSM, or Global System for Mobile Communications, is a standard technology used in mobile devices to facilitate communication through cellular networks. It’s a prevalent wireless communication standard used by mobile phones, tablets, and other devices to transmit voice and data.

Here are some key aspects of GSM connectivity:

  • Communication Standard: GSM is a widely adopted standard for digital cellular networks. It sets the protocols for transmitting voice calls and data over mobile networks.
  • Coverage and Reach: GSM networks have extensive coverage globally, providing connectivity across various regions and countries. This wide coverage enables devices using GSM technology to communicate in many parts of the world.
  • Voice and Data Transmission: GSM enables the transmission of both voice and data. It supports voice calls, SMS (Short Message Service), and data transmission for internet access, emails, and other applications.
  • SIM Card Technology: GSM networks use SIM (Subscriber Identity Module) cards to identify and authenticate users on the network. SIM cards store user information such as phone number, contacts, and other subscription details.
  • Security Measures: GSM incorporates security measures like encryption to protect communications between devices and the network, ensuring confidentiality and preventing unauthorized access to data.
  • Evolution to Advanced Technologies: While GSM laid the foundation for mobile communication, newer technologies like 3G, 4G (LTE), and 5G have evolved from it, offering faster data speeds and improved capabilities while maintaining backward compatibility with GSM networks.

Key Features of ESP32-based PLC with GSM

An ESP32-based PLC with GSM features represents a cutting-edge solution at the intersection of embedded systems and industrial automation. This innovative combination harnesses the power of the ESP32 microcontroller and GSM connectivity to create a versatile and highly capable automation platform.

Key features are as follows:

  • ESP32 Microcontroller: The ESP32, renowned for its robustness and versatility, serves as the core processing unit of the PLC. Its dual-core architecture, low power consumption, and built-in Wi-Fi and Bluetooth capabilities offer a solid foundation for industrial automation applications.
  • PLC Functionality: Equipped with GPIO pins, analog and digital input/output interfaces, and support for various communication protocols, the ESP32-based PLC functions as a programmable logic controller. It facilitates the control, monitoring, and automation of industrial processes and machinery.
  • GSM Connectivity: The integration of GSM capabilities allows the PLC to communicate over cellular networks. This feature enables remote access, data exchange, and control functionalities, empowering users to manage and oversee industrial systems from distant locations.
  • Remote Monitoring and Control: Leveraging GSM connectivity, users can remotely monitor real-time data, receive alerts, and exert control over industrial equipment or processes using mobile devices or computers connected to the GSM network.
  • Data Exchange and Communication: The GSM functionality enables seamless data exchange between the PLC and external systems or servers, facilitating communication for reporting, analysis, and decision-making purposes.
  • Enhanced Flexibility and Accessibility: The combination of ESP32-based PLC with GSM offers enhanced flexibility and accessibility, allowing for efficient management and optimization of industrial operations, regardless of geographical constraints.

Applications of ESP32-based PLC with GSM

The EESP32-based PLC with GSM offers a myriad of applications across various industries and scenarios due to its versatile capabilities. Some notable applications include:

  • Industrial Automation: Utilized in manufacturing plants, factories, and production lines for controlling machinery, managing processes, and monitoring equipment remotely. It aids in optimizing production efficiency and reducing downtime.
  • Remote Monitoring and Control: Deployed in remote or unmanned sites, such as in agriculture for irrigation systems, weather monitoring, and livestock management. It allows users to monitor and control operations from afar remotely.
  • Smart Agriculture: Used in precision agriculture for tasks like soil monitoring, irrigation control, and crop management. The PLC with GSM enables real-time data collection and analysis for better decision-making.
  • Infrastructure Management: Applied in infrastructure settings like utilities (water, gas, electricity), where remote monitoring and control of critical systems or installations are crucial for maintenance and operational efficiency.
  • Environmental Monitoring: Employed in environmental monitoring systems for collecting data on air quality, pollution levels, weather conditions, and more. The GSM connectivity enables real-time data transmission and analysis.
  • Mobile Asset Tracking: Utilized in logistics and transportation industries for tracking and managing mobile assets such as vehicles, containers, or equipment. The GSM connectivity enables real-time tracking and management regardless of location.
  • IoT Integration: Integrated into IoT ecosystems for data acquisition, integration with cloud platforms, and building scalable IoT solutions across various domains.
  • Energy Management: Applied in energy management systems for monitoring and controlling power distribution, renewable energy systems, and smart grid applications.
  • Security and Surveillance: Used in security systems for remote surveillance, access control, and alarm systems where real-time monitoring and notifications are vital.
  • Healthcare Monitoring: Applied in remote healthcare applications for monitoring patients’ vital signs, collecting medical data, and enabling telemedicine services in remote areas.

These applications showcase the versatility and adaptability of ESP32-based PLC with GSM connectivity across diverse industries, enabling remote access, data exchange, and control functionalities crucial for efficient and advanced automation solutions.


ESP32-based PLC with GSM is now available with NORVI. In the realm of devices like NORVI controllers equipped with GSM connectivity, this technological integration serves as a pivotal enabler, empowering industrial automation systems to establish seamless communication across expansive cellular networks.

This transformative capability extends far beyond mere connectivity, bestowing upon these controllers the profound ability to facilitate remote access, bidirectional data exchange, and dynamic control functionalities. Through the convergence of NORVI controllers with GSM technology, a paradigm shift emerges, allowing users, irrespective of geographical constraints, to engage with and oversee industrial operations and machinery.

This breakthrough offers an unprecedented level of flexibility and responsiveness, as users harness the potential of their mobile devices or computers tethered to the omnipresent GSM network, thereby orchestrating efficient management and interaction with industrial systems and machinery positioned across disparate locations.

Here are the main features of NORVI ESP32-based PLC with GSM;

  • ESP32-WROOM32: This is a powerful and widely used microcontroller module manufactured by Espressif Systems. The ESP32-WROOM32 integrates the ESP32 chip, which is a dual-core microcontroller with integrated Wi-Fi and Bluetooth capabilities. It’s known for its versatility, low power consumption, and ample processing power, making it popular in various IoT applications, including home automation, industrial automation, wearable devices, and more.
  • SIM800L: SIM800L is a highly compact and versatile GSM/GPRS module designed for mobile communication. It allows devices to connect to cellular networks, enabling functionalities like making/receiving calls, sending/receiving SMS messages, and data transmission over the GPRS network. The module is commonly used in IoT projects, such as GPS tracking devices, remote monitoring systems, and other applications that require cellular connectivity.
  • The SIM7500: This is a cellular module developed by SIMCom Wireless Solutions. It’s designed to provide cellular connectivity with support for various wireless technologies, including LTE (4G), WCDMA (3G), and GSM (2G), offering high-speed data transmission and communication capabilities. The module supports functionalities such as making and receiving calls, sending and receiving SMS messages, and establishing data connections over the LTE network.

These components, when integrated into devices or systems, provide connectivity solutions, allowing communication over different types of networks (Wi-Fi, Bluetooth, GSM, GPRS, LTE), thereby enabling a wide range of functionalities and applications in the IoT and industrial sectors.

However, NORVI ESP32-based PLC with GSM has an LTE option that comes with it.  It will explore through another article for you. Just visit the product page for more information here.


In conclusion, the ESP32-based PLC with GSM connectivity represents a groundbreaking advancement in the realm of industrial automation. As a cornerstone of mobile communication, GSM technology provides a global standard for voice and data transmission, offering extensive coverage, robust security measures, and a foundation for evolving technologies like 3G, 4G (LTE), and 5G.

The fusion of the ESP32-based PLC with GSM connectivity in PLCs creates a versatile automation platform. This integration allows for remote access, data exchange, and control functionalities, empowering users to oversee industrial systems from distant locations.

Key features like the ESP32’s robustness, PLC functionality, and GSM connectivity enable real-time monitoring, seamless data exchange, and efficient management of industrial operations, transcending geographical constraints, while the applications of ESP32-based PLCs with GSM span various industries which showcase the adaptability and versatility of these systems, offering remote access, data exchange, and control crucial for advancing automation solutions.

Notably, devices like NORVI ESP32-based PLC with GSM, epitomize this transformative integration. NORVI controllers equipped with GSM technology empower industrial automation systems to establish seamless communication across expansive cellular networks. This convergence goes beyond mere connectivity, enabling bidirectional data exchange, dynamic control functionalities, and unprecedented flexibility for users, regardless of geographical constraints.

In essence, the integration of ESP32-based PLCs with GSM connectivity heralds a new era in industrial automation, where users can efficiently manage and interact with industrial systems and machinery positioned across disparate locations, leveraging the potential of ubiquitous GSM networks. This breakthrough offers unparalleled flexibility, responsiveness, and efficiency in overseeing and managing industrial operations, marking a significant stride in the evolution of automation solutions.

ESP32-based PLC with GSM is now available to buy: Visit the page

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter : YouTube

Posted on

Why should use ESP32-based PLC with Analog Inputs for Seamless IoT Integration

ESP32-based PLC with Analog Inputs

Wondering how our ESP32-based PLC with Analog Inputs stand out? Delve into the crucial features, precision capabilities, and versatility of analog inputs, crucial for precise real-world data acquisition and control across diverse industries. NORVI’s tailored range of 0-10V and 4-20mA Analog Inputs presents customized solutions for industrial requirements.

What are Analog Inputs?

Analog inputs refer to the interfaces or ports on a device, such as a microcontroller, PLC (Programmable Logic Controller), or sensor, that are designed to accept analog signals. These inputs are crucial for acquiring and processing continuous real-world data that varies in amplitude or intensity over time.

Analog inputs typically allow the connection of sensors or devices that generate analog signals, such as temperature sensors, pressure transducers, potentiometers, strain gauges, and many others. These sensors produce signals that represent physical quantities like temperature, pressure, voltage, light intensity, etc., in analog form, which means they provide a continuous range of values.

Devices equipped with analog inputs use analog-to-digital converters (ADCs) to convert the incoming analog signals into digital form, which can be processed, analyzed, stored, or used by digital systems like microcontrollers or computers. The ADCs sample the analog signal at discrete intervals and assign digital values to represent the amplitude of the analog signal at those points in time.

Analog inputs are essential in various fields, especially in industrial automation, robotics, data acquisition systems, and scientific instrumentation, where precise measurement and control of analog data are critical for operations and analysis. The quality and accuracy of the analog inputs play a significant role in the overall performance and reliability of the system.

Features of ESP32-based PLC with Analog Inputs?

ESP32-based PLC with Analog Inputs has main features as below,

  • High-resolution analog-to-digital conversion
  • Voltage input range
  • Current input range
  • Differential input capability
  • Sampling rate
  • Noise filtering
  • Programmable gain amplification
  • Multiplexed input channels
  • Overvoltage protection
  • Calibration options
  • Signal conditioning
  • Compatibility with various sensors
  • Low-power consumption
  • Real-time data acquisition
  • Configurable input impedance
M11 E Series

The Precision of Analog inputs

The precision of ESP32-based PLC with Analog Inputs refers to their ability to accurately measure and convert analog signals into digital values. The ESP32 microcontroller typically has a 12-bit ADC (Analog-to-Digital Converter) for analog input.

The 12-bit ADC resolution means that it can convert an analog input voltage into a digital value between 0 and 4095 (2^12 – 1), providing 4096 discrete steps. This resolution determines the granularity or level of detail in the conversion process. Higher resolution allows for more precise measurements, as the ADC can distinguish smaller changes in the input voltage.

The precision of the ESP32-based PLC with Analog Inputs can be affected by various factors, including:

  • Voltage reference: The accuracy and stability of the reference voltage used by the ADC can impact the overall precision of analog-to-digital conversion.
  • Noise and interference: Electrical noise or interference in the system can introduce errors in the analog readings, affecting the accuracy and precision of the measurements.
  • Signal conditioning: Proper signal conditioning circuits and techniques can enhance the accuracy and reduce noise in analog measurements.
  • Calibration: Calibration procedures can be implemented to improve the accuracy and correct any inherent inaccuracies in the ADC readings.

While the ESP32’s ADC provides reasonable precision for many applications, if higher accuracy or precision is required, external analog front-end components or specialized ADCs with higher resolutions and better characteristics can be used in conjunction with the ESP32 to achieve more accurate analog measurements. Additionally, careful design considerations and noise reduction techniques can also improve the overall precision of analog inputs in ESP32-based systems.

Versatility of an ESP32-based PLC with Analog Inputs

The versatility of an ESP32-based PLC with Analog Inputs lies in its ability to offer a wide range of functionalities and applications across various industries. Here are several aspects that highlight the versatility of an ESP32-based PLC with analog inputs:

  • Flexible Analog Input Support: ESP32-based PLCs typically come equipped with multiple analog input channels, allowing integration with various analog sensors measuring parameters like temperature, pressure, humidity, voltage, current, etc. This flexibility enables monitoring and control of diverse industrial processes.
  • Higher Resolution: ESP32-based PLC offers higher resolution analog inputs with ADS1115 16bit ADC.
  • Real-time Monitoring and Control: With its capability for real-time data acquisition and processing, an ESP32-based PLC can continuously monitor analog input signals, providing timely control actions based on the analyzed data.
  • Wireless Connectivity: Many ESP32-based PLCs come with built-in Wi-Fi or Bluetooth connectivity, enabling remote monitoring, control, and data transmission to cloud platforms or mobile devices. This wireless capability enhances the PLC’s adaptability to IoT (Internet of Things) applications.
  • Cost-Effective Solution: ESP32-based PLCs often offer a cost-effective alternative compared to traditional PLCs, making them suitable for smaller-scale industrial applications or projects with budget constraints.
  • Scalability and Expansion: These PLCs are often designed with expandability in mind, allowing the addition of extra modules or peripherals to extend functionality, such as adding more analog inputs, digital I/Os, communication interfaces, etc.
  • Cross-Industry Applicability: The versatility of an ESP32-based PLC with analog inputs makes it suitable for a wide range of industries including manufacturing, agriculture, HVAC (heating, ventilation, and air conditioning), automation, monitoring systems, and more.

In essence, the ESP32-based PLC’s versatility lies in its adaptability to diverse applications, its programmability, connectivity options, and the ability to handle analog signals while offering a cost-effective solution for various industrial automation needs. Threfore, it shows that how vital ESP32-based PLC with Analog Inputs for seamless IoT intergration and Automation projects.

NORVI has ESP32-based PLC with Analog Inputs which offers two ranges of Analog Inputs as 0-10V Analog Inputs and 4-20mA Analog Inputs, refer to our product range.

Stay Connected to get updated news from NORVI: Facebook : LinkedIn : Twitter

#AnalogInputs #ESP32PLC ESP32PLCwithAnalogInputs #PrecisionControl #IndustrialAutomation #PLCSystems #RealWorldData #ADCtechnology #SensorIntegration #AnalogDigitalConversion #IoTApplications #VersatilePLC #AnalogSensors #DataAcquisition #CustomControlLogic #WirelessConnectivity #DigitalSystemsIntegration #ESP32Technology #AnalogFrontEnd #HighResolutionADC #RemoteMonitoring #IoTSolutions #ScalablePLC #IndustrialSensors #AutomationTechnology #NORVIProducts #IndustrialESP32