I have a wireless garage door remote and looking to turn it into a wifi opener.
I am looking for something to act as a switch.
I was hoping i could connect a wire to 0v side of the switch and feed it 3.3v from the PI but manually doing it to the opener doesn't seem to give the desired result.
bridging a wire across the switch terminals does though.
so im needing a relay of some sort. i have read about relay boards, not sure how many "relays" i can operate from the board?
i need a minimum of 4 preferably 5 I was hoping to run it on a model A or Zero but neither have an ethernet port.
i did also read about being able to add an ethernet port using the SPI pins but am i still able to add the relay board provided i have enough pins? and not have an issue with lack of power?