See the circuit board that I have taken out of the shell. Using this relay unit might kill your precious M5Stack Atom Lite sooner or later. A bit scary, so now let me share my random thoughts about it ...

This board also has circuitry to support a 12V PWM fan. This board uses compact solid state relays that are able to handle high power. This is an alternative to using an off the shelf relay module ...

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 ...

Credit card-sized quad relay board runs Tasmota firmware on ESP32 module (Crowdfunding) The “ESP32 IoT Relay Board” is a credit card-sized ESP32 board with four small 250VAC/30VDC 7A relays that runs ...

BJT-circuit-design-assignment In this assignment, I designed and analyzed two circuits: a BJT amplifier and a relay module. Problem 1: BJT Amplifier Design I determined the assigned BJT BC548 based on ...

The components of the digital energy meter system include the relay part, LCD display module circuit,current and voltage AC testing module circuit, and STM32 core circuit board.The principle of ...

A 5V, 4-channel solid-state relay module (refer Fig. 2), purchased from ebay.in, is connected to Raspberry Pi GPIO pins 18, 19, 21 and 23. A 5V supply is given to relay module from Raspberry Pi.

ESP32-C6-based Wi-Fi relay board features six 10A relays, supports Home Assistant, 3D printed enclosure Seeed Studio’s XIAO 6-Channel Wi-Fi 5V DC Relay is a compact ESP32-C6 Wi-Fi relay board built ...