Swifitch is ESP8266 based relay board that could be used to turn any light or any wall socket into smart one!

EPS32 dev board for WLED project and many more

Python 8 Channel RS485 MODBUS RTU relay board type R421A08

Sketch to control an esp8266-01 stc 15f104W powered 1-channel relay board

Programs written for Joe Allen's single board relay computer.

Using this example you should able to turn on/off HID USB relays

An ecosystem monitoring setup, ideal for growing plants indoors without user intervention.

Smart Card Contactless Raspberry Pi. This project was born with the aim of providing a complete example (hardware and software) on how it is possible to create a simple access system using contactless Smart Cards with Mifare Classic 1k and the Raspberry Pi.

Python code for controlling Denkovi usb relay boards.

C# managed library for USB HID Relay module

A touch screen relay panel based on RaspberryPi

📝 릴레이 소설쓰기 서비스, 릴레이 노벨롭먼트

Arduino Temperature controller for brewing beer. Optionally sends data to Brewery Services project using bluetooth or WiFi.

A MicroPython library for jxl XL9535-KxV5 I2C relay boards

Universal MQTT wifi relay

Create an ESP8266 Website to control 8 relays

Controlling the lights in your house using your voice is a great way to dip your toes into the smart homeworld. And if you already have a smartphone you can build your own smart switch using a few bucks.

This project helps you to use or test USB Relays (No driver deeded and plugs as HID to windows)

SCADA software for metal hydride cooling system based on Raspberry Pi and some peripheral modules

code for home automation along with switch feedback using esp8266