Considering building my own ESP32-based door chime instead of spending almost €200 on the “DoorBird IP Door Chime A1061W”. I can probably buy all required components for less than €15.
#DoorBird sends local UDP broadcasts and the encryption scheme is publicly documented, so it should be straightforward to receive and parse those packets on an #ESP32. And then, depending on which doorbell button was pressed, simply play a sound.
When trying to use the ChaCha20-Poly1305 AEAD functions (e.g., crypto_aead_chacha20poly1305_decrypt) in my ESPHome program, I ran into a linker error: Successfully created ESP32 image. Linking .pio...
Too many hours went into this (I’m really not experienced with hardware and soldering), but here’s a working prototype of my ESPHome-based PoE DoorBird chime. It listens to UDP packets from the DoorBird intercom, decrypts them, and plays a sound when someone rings.
On startup, it plays a familiar sound once the first UDP packet is received to indicate network connectivity.
I’ll put it on GitHub soon!
aaron
Worik