I have a remote for my kitchen fan where I can turn on the fan and light. I want to sniff the signal for the light toggle so I can use my Raspberry Pi 3 B+ to send the signal.
I took the picture from another forum post. I don't have the transmitter connected yet though.
When I try to run RFSniffer or rpi-rf_receive as root on gpio 27 and have the remote right up to the receiver and push a button I don't get anything at all. I have tried to change the pins any way I can think of but no change. I'm starting to think if it's the remote that doesn't really send on 433MHz? Although it says so on the back.
What can be the problem here?
Some forums posts says I need to use resistors so I don't send out 5V on the gpio pins but most of then just connect them like the picture above so I don't know what to do.