We learned in the previous tutorial how to connect a joystick to a Raspberry Pi 4 using an mcp3008 and an op-amp IC, the LM324A. For each of the interface methods we studied, we created a python script allowing us to interact with the circuit. This tutorial will show you how to connect a 4-channel relay module with a Raspberry Pi to carry out switching.
<img src="https://images.theengineeringprojects.com/image/main/2023/06/1-how-to-interface-a-four-channel-relay-with-raspberry-pi-4-01-01.jpg" alt="Interface a 4-Channel Relay with Raspberry Pi 4, 4 channel relay with ...