Lesson3- How to use Arduino to control relay by wall switch button Category: ArduinoBy admin06/18/2021 Author: admin Post navigationPreviousPrevious post:Lesson2 – How to use Arduino to control relay ON/OFFNextNext post:Lesson4- How to use Arduino to read DS18B20 temperature sensorRelated PostsHow to use arduino library for KC868-H32B Pro11/01/2022ESP Module Flash Download Tools08/26/2022Lesson29- Tasmota for KC868-A8 by PCF8574 relay and monitor sensor11/18/2021Lesson28-How to use KC868-A4 (ESP32) DAC output DC 0 10V by ESPHome11/17/2021Lesson27- how to use web service http command via ESPHome with KC868 A811/08/2021How to DIY Music Reactive LED Strip For Christmas Tree by ESP3211/07/2021