How to control 5V 4 Channel relay with ESP32
In this video i want to share how to control 5V relay 4 channel with Esp32 .Esp 32 just have 3.3V output but to control 5V relay board we need to have extra 5V power supply to make it on for relay coil.In this method you can apply many relay board. Download the code here;https://github.com/passion-tech/Hello...
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