ESP32voipdoorbell

A voip based door bell / phone realized with ESP32 and s2i mems + s2i dac

It is still under development.

Working features:

• Connect to a SIP server ( fritzbox router )
• Initate a call ( SIP/SDP protocol )
• 3 seperate buttons. Each initiate a call to a diffrent phonenumber.
• A two way voice transmission between the doorphone and the called party. (RTP protocol, G.711 alaw codec )
• Web based configuration. Parameters and wifi credentials.
• Web based firmware update.

Planned features:

• Sitch a connected relais with a MFV tone.
• WS2812b LEDs for lightning the door bell lables and for giving an optical feedback.
• A wellcome message for visitors.

Used hardware:

• ESP32 dev board
• i2s MEMS mic type INMP441
• MAX98357 I2S audio amplifier
• 3x WS2812b LEDs

Requirements:

• ConfigManager@>=1.5.2
• ArduinoJson@>=5.13.4
• [email protected]
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• Adafruit [email protected]

Project homepage

default PINOUT for ESP32voipdoorbell