I created a simulation circuit for a KF-301(or KY-019) to analyze how the circuit works before I build one. Such module is important circuit part when powering AC household electronics and controlling using microcontroller like Arduino or ESP32. This module can also work with ESP32. It requires just few additional components besides the 5V relay which are leds and resistor and diodes.
The following shows the circuit diagram of the 5V module.
The following video shows how the circuit works.
Some of blog post in which I have used relay module are Guide to Relay with Arduino and Driving Relay H-bridge with Arduino.
Tags:
Relay
