A Python 3 module for getting/setting the state of USB Relays. Specifically, these relays are purchased usually from EBay and come from a Chinese manufacturer. They have Songle relays, or look alikes ...

CH340-fan-control is a python script to control a USB fan with the QinHeng Electronics CH340 and HL340 USB relay module under Linux. It will turn a USB powered fan on when a given temp is exceeded ...

SeaDAC PLC-16H digital I/O module combines high-current Form C outputs and optically isolated inputs. It has eight SPDT high-current Form C relays that can directly switch up to 6A loads at 250VAC and ...

GOEPEL electronic has extended its portfolio of innovative USB modules. USB 31128 is a relay board with USB 2.0 interface for general measurement and control applications to switch electronic signals ...

In this post we are reviewing the ESP-01 Wi-Fi Relay Module. It is one of the cheapest smart switches you can purchase currently for making smart home, internet of things, and other wireless do it ...

LilyGo T-Relay-8 is an ESP32 WiFi & BLE board equipped with eight 5V relays supporting up to 250V AC or 28V DC, as well as 16-pin GPIO header for expansion. The board offers a more compact solution ...

Relays are frequently used in our electronics applications specially when we need to drive high loads from microcontroller circuits. So in this DIY project, we make a 4-Channel Relay Driver Circuit to ...

Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...