ESPHome-FeTAp

Interprets impulses from an old FeTAp telephone and makes them available as ESPHome sensor data.

Use cases include controlling your home lightning by dialing numbers on the dial pad.

Exposed Sensors

• Cradle Sensor: Sends ON when the cradle is lifted up, and OFF when it’s hung up.
• Dial Sensor: Sends 0-9, depending on the digit you’ve dialed. Note that after publishing the digit, it will immediately publish its default value of -1 again, so dialing the the same digit multiple times in a row will always cause the sensor to trigger a change.

Log Output

Hardware

• Unmodified FeTAp 611
• ESP32 DEVKIT V1

Sources

• machina eX on YouTube: Game On Stage Level 3. Tutorial#1 - Arduino küsst Telefon - YouTube
• mikrocontroller.net: Hauptcode_mit_Testcode_2.ino