I’ve written a door pi software that not only controls
- Intercom door open function on buzzer detection
- Kasa Smart sockets (to control heaters)
- Infrared smart hoover (coredy R500)
But I’m also working on pulse width modulated audio to play audio file down the line to the person at the intercom. Actually i have it done, just need to push the PCM code once i have sorted the audio amplification.