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Here is a quick dirty one take video on how to use a relay module without needing a Arduino , Pi or other microcontroller.

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Don't have a voltage tester to hand? Save this for when you may need it on your Chinese Diesel Heater (CDH) It may not be your ...

#pcb #audio #utsource Hello friends! In this video, we'll assemble the ISD1820 module, an audio recorder module that can ...