Solution for sending a signal via an HFY-FST transmitter module, controlled by an Arduino, to a HT12D decoder.
- Detect remote frequency using gqrx
- Record remote control signal using rtl_433 (example_original_signal.cu8)
- Repending on your receiver and reception circumstances, getting clean signals may require a few attempts and some fiddling.
- rtl_433 can auto-analyze signals so you have a better idea of what you are receiving.
- Import original signal .cu8 as raw data to learn / verify your code.
- Edit the example code in the sketch to match your required signal.
- Run sketch on an Arduino, digitally writing to the HFY-FST data pin.
- Record emulated signal.
- Manually check signals in Audacity to confirm they are the same (or close enough).
- Tweak code for timing as needed and repeat from step 4.