This project is for smartifying a siedle doorbell without going through siedle.

Sources

• https://www.microchip.com/en-us/solutions/consumer/audio-and-speech/recording
• https://github.com/CybDis/EspSmartSipDoorbel?tab=readme-ov-file
• https://www.reichelt.de/magazin/projekte/smarte-tuerklingel/
• https://github.com/opend-connect/openD
• https://github.com/mbs38/siedle-in-home-bus-avr
• https://www.panbachi.de/smarte-tuerklingel-alte-sprechanlage-smart-machen/