After power on the a WiFi AP for configuration is open for 30 seconds.
SSID: doorbell
PASS: do0R6311
The WiFi AP for configuration is open as long as the configuration is not done.
Please set WiFi and FritzBox credentials.
Input (on GPIO16) works from 3.3V to 24V AC/DC.
Set jumper to reset pin to reset the controller if door bell is pressed (if needed).
USB serial connection 115200 8N1.
- Wemos D1 Mini ESP32
- PC814 with 820 Ohm
- GPIO16 with internal pullup and PC814 to GND
- Jumper from GPIO16 to RESET (not used)
The project is very loosely based on:
https://www.heise.de/select/ct/2017/17/1502995489716437
https://www.reichelt.de/magazin/projekte/smarte-tuerklingel/