I’ve bought a RF transmitter and receiver on eBay and I’m trying to get my garage door codes with my Wemos D1 Mini.

RF transmitter and receiver

I’ve downloaded the RCSwitch library, hooked up the receiver to ground, 5v and data to pin D4. Also flashed the sample receiver sketch.

The problem is that I don’t get anything on serial monitor... the Wemos board has an inbuilt led that flashes when I press my garage remote buttons, which means that pin DATA is sending a signal to the board, but I can’t see anything on serial monitor (Baud rates and serial connectivity is all good).

Tried other pins and didn’t get anything different.

Does anyone know how can I specify the pins with RCSwitch or have and idea of what is going on?

UPDATE 1 I’ve certified that transmitter is working and hooked properly using the Radiohead library.

receiver and transmitter test

UPDATE 2 The remote I have is so cheap that it is barely impossible to determine which chip it uses:

chip of current remote

  • get the neighbor's garage door codes too if it is possible :-)
    – Juraj
    Dec 7, 2019 at 7:19
  • Well, I can’t get even my garage door codes... 😞
    – TTKDroid
    Dec 7, 2019 at 7:21
  • why do you believe that you can receive your garage control codes with that device?
    – jsotola
    Dec 7, 2019 at 8:07
  • Actually, I don’t need the code, I need to clone the signal to open my garage using my Wemos
    – TTKDroid
    Dec 7, 2019 at 8:09
  • how about sharing your code?
    – oh.dae.su
    Dec 7, 2019 at 18:55


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