➀ Arduino Opta is a secure and durable micro PLC designed for industrial and building automation, featuring seamless integration with existing systems and Arduino ecosystem devices.

➁ It offers key capabilities like Modbus communication, edge decision-making via dual-core STM32H747XI processor, multiple connectivity options (Ethernet/RS485/Wi-Fi), encrypted data security, and DIN rail compatibility.

➂ The device supports three variants (Lite/RS485/WiFi) and expandable modules for industrial applications, enabling retrofitting legacy equipment, predictive maintenance, and IoT-enabled automation with Arduino Cloud integration.

➀ Presents a feedback-based humidity control system using Arduino for the textile industry to ensure fabric quality and operational efficiency;

➁ Utilizes DHT22 sensor for real-time monitoring and SPDT relay module to regulate an ultrasonic humidifier;

➂ Requires EFY Prime subscription for full circuit details and implementation guide.

➀ A rev counter prototype for a CNC lathe using Arduino Pro Micro faces jitter (±3 counts) due to mechanical imperfections but functions accurately on signal generators;

➁ Limitations in Arduino's 8-bit PWM resolution (via analogWrite()) prompt plans for custom 10-bit code, while a safety feature prevents unintended motor activation;

➂ 3D-printed housings and open-source code highlight iterative hardware/software integration for workshop deployment.

➀ The article introduces a beginner-friendly Arduino tutorial on implementing the Matter protocol for IoT device standardization;

➀ Matter aims to unify connectivity across smart home brands for seamless consumer experiences;

➂ The writer highlights the protocol’s potential despite personal unfamiliarity, emphasizing its role in simplifying IoT ecosystems.

➀ Introduction of a modified self-docking Arduino Alvik robot (nicknamed Guacho) with autonomous charging capabilities;

➁ Demonstration of the robot navigating indoor environments independently and returning to base for self-sustaining operation;

➂ Highlights the advancement in overcoming power dependency challenges in robotics.

➀ The author discusses the need for a large inductor in series with permanent magnet DC motors when controlled by SCR-based power controllers.

➁ The possibility of safely interfacing an Arduino with an SCR controller is explored.

➂ The author details the process of reverse-engineering a SCR controller from a 1980s machine tool and the challenges encountered.

➀ This article provides a detailed guide on building an electronic dice using an ESP32 microcontroller, complete with a rolling effect and LED representation of dice faces.

➁ The project involves integrating various ICs like 74LS138, 74LS260, and CD4075 to handle logic operations and decoding functions for dice faces.

➂ The guide includes a bill of materials, circuit diagram, and sample code snippets for implementation in Arduino IDE, making it accessible for beginners and hobbyists interested in DIY electronics projects.

➀ Introduces Arduino Stella, a product powered by Ultra-Wideband (UWB) technology for achieving centimeter-level precision in real-time tracking.

➁ Explores various applications of Arduino Stella, including smart human-machine interaction, warehouse automation, secure asset tracking, residential access control, and electric vehicle charging automation.

➂ Discusses the Portenta UWB Shield, which enhances Portenta C33 projects with precise tracking capabilities and seamless integration options for industrial IoT solutions.

➀ This article introduces a soil moisture indicator designed for gardening applications, which uses an Arduino Nano and an LCD display to indicate the moisture level of the soil.

➁ The device categorizes soil moisture into four levels: dry, humid, wet, and 'sensor not in soil'. It provides a cost-effective solution for monitoring soil moisture with minimal human intervention.

➂ The project includes detailed instructions for building the indicator, including the necessary components like the Arduino Nano, Soil Moisture Sensor, and LCD I2C, along with the corresponding circuit diagram and source code.

➀ SparkFun Electronics will manufacture the Teensy 4.0 and 4.1 Cortex-M7 development boards;

➁ The boards offer a powerful processor and Arduino compatibility;

➂ PJRC and SparkFun have a collaborative relationship, with SparkFun handling manufacturing and sales, allowing PJRC to focus on software development.

➀ This article announces an internship opportunity for Electronics Engineering students at 1accord in Mumbai.

➁ The internship involves hands-on experience with PCB design, IoT, embedded systems, Python programming, circuit design, and platforms like Arduino and Raspberry Pi.

➂ Key responsibilities include assisting in PCB prototyping, developing IoT solutions, working on embedded systems, writing Python code, designing circuits, and researching new technologies.

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➂ Arduino Days are here again! Get ready to celebrate Arduino Days again - a celebration of all things Arduino! The event runs, worldwide, from 21-22 March.

➃ We're always writing about the nifty and powerful boards on Gadget Master, which have a huge and never ending range of applications.

➄ If you take a look at our...

➀ This article introduces an Arduino-based automatic bell system that can ring at predefined times without manual intervention.

➁ The system uses an RTC module for precise timekeeping and an LCD display to show the current time and upcoming bell schedules.

➂ It allows users to adjust bell timings using a 4x4 matrix keypad, making it suitable for various school schedules and exam periods.

➀ Python is widely used in IoT due to its simplicity and versatility. It is easy to learn and use, has cross-platform compatibility, and a large community that contributes to IoT development.

➁ Python offers various modules for IoT programming, including those for Raspberry Pi and Arduino, which are popular controller boards for hardware projects.

➂ Using Python, developers can interact with IoT devices and systems, facilitating the development of applications across various domains such as home automation, healthcare, and industrial control.

➀ The article discusses the development of an automatic water level indicator and controller device that addresses the drawbacks of existing water level indicators and controllers. This device uses Arduino Uno and includes components like water level sensors, LEDs, and a relay.

➁ The circuit diagram and working principle of the device are explained, detailing how the pump operates based on the water level detected by the sensors.

➂ Instructions for testing the device and downloading the source code are provided, along with insights from the author about the project's potential applications.

➀ Ardu-Man is an Arduino-based simplified, desktop version of the classic Pac-Man arcade game.

➁ The project, created by T.H,M.W, can be found on hackster.io.

➂ It features light and sound effects to enhance the gaming experience.

➀ Rajguru Electronics has introduced ADIY's Uno R3 Beginners Kit, a comprehensive package for electronics and Arduino beginners.

➁ The kit includes 18 essential items such as an ADIY Uno DIP R3 board, sensors, relays, LEDs, and more.

➂ It is designed to provide a solid foundation for learning basic Arduino programming and sensor interfacing, suitable for hands-on projects.

➀ ADIY has unveiled a new microcontroller board named ADIY UNO R3, which is an affordable alternative to the popular Arduino UNO R3.

➁ The board features a versatile design suitable for applications like robotics, automation, control systems, and IoT projects.

➂ Key specifications include digital I/O pins, analog input pins, a microcontroller, and communication options such as UART, I2C, and SPI.