Controlling ESP32 PLC digital outputs with Arduino Cloud Jun 15, 2026 This article is the second in a series on using the Industrial Shields ESP32 PLC with Arduino Cloud. It shows how to add a cloud variable, configure the network, upload the sketch, and build a dashboa... Read more
Detecting RFID tags with the RC522 reader and M-Duino PLC Jun 15, 2026 RFID (Radio Frequency Identification) technology enables automatic identification of objects and people via tags that transmit a unique UID when brought near a reader. This article shows how to connec... MDuino Open-Source SPI Read more
Reading the IE5345 inductive proximity sensor with M-Duino PLC Jun 15, 2026 The IE5345 is an IFM inductive proximity sensor that detects metallic objects at a range of 5 mm and outputs a digital signal. Because inductive sensors respond only to metal, they work reliably in we... MDuino Sensor Read more
Publishing DS18B20 temperature data from M-Duino PLC via MQTT Jun 15, 2026 This is part 1 of a series showing how to build a data pipeline from an Industrial Shields M-Duino PLC to a Google spreadsheet using MQTT and Node-RED. In this first part, the M-Duino reads the temper... DS18B20 MDuino MQTT Read more
Connecting multiple SPI slaves to an M-Duino PLC Jun 15, 2026 SPI (Serial Peripheral Interface) is a synchronous serial communication protocol commonly used to connect a master device to one or more peripherals. Compared to I2C, SPI is faster and simpler: instea... MDuino Open-Source SPI Slave Read more
Controlling addressable LED strips with M-Duino and ESP32 PLC Jun 15, 2026 Addressable LED strips such as the WS2812B use a single data wire to control each LED individually in colour and brightness. This article shows how to connect a WS2812B strip to an M-Duino or ESP32 PL... Read more
Controlling a stepper motor with an ESP32 PLC Jun 15, 2026 In this post we will see how to control a stepper motor using an ESP32 PLC. We will cover the basics of stepper motors, their features, and how they work in combination with a driver controlled by the... Read more
Introduction to InfluxDB Jun 11, 2026 What is InfluxDB? InfluxDB is an open source time series database (TSDB). It is designed to efficiently handle large volumes of time-stamped data, making it particularly well-suited for applications t... Read more
Profinet & Arduino: communication master Arduino  to  S7 PLC series via Profinet protocol Jun 11, 2026 Introduction Profinet (Process Field Network) is an open industrial Ethernet standard designed for automation and process control applications. It serves as a communication protocol for connecting dev... Read more
Profinet & ESP32: communication master ESP32 to S7 PLC series via Profinet Protocol Jun 11, 2026 Introduction Profinet (Process Field Network) is an open industrial Ethernet standard designed for automation and process control applications. It serves as a communication protocol for connecting dev... Read more
Ardbox PLC family: industrial control with Arduino Leonardo inside Jun 10, 2026 If you've ever built a working prototype with Arduino and then faced the challenge of deploying it in a real industrial environment — dealing with noise, 24 Vdc signals, relay loads, or Modbus network... Read more
Four years, more than 300,000 luminaires: the Smart Light Controller story Jun 8, 2026 In 2022, the first city council switched on its public lighting managed by a Smart Light Controller. It was not a pilot. It was a real decision, with real budget and real public accountability. The Sm... Read more
