EspNowAudio

Project EspNowAudio
Status	Initializing
Contact	bertrik
Last Update	2020-03-01

What

The idea is to experiment a bit more with ESP now, in particular in combination with audio transfer.

Stuff to learn:

• ESP now broadcast mode: does it really work? https://github.com/espressif/ESP8266_NONOS_SDK/issues/8#issuecomment-419774432
• ESP now throughput
• ESP now packet loss when used continuously
• Audio over IP protocols, e.g. VBAN
• Possibility to transfer even ultrasonic audio?

Possible end result: A kind of zero-standby power intercom. When you press the button, an ESP8266 is powered up. It immediately starts transmitting audio from a digital I2S microphone over ESP now. The receiving end will probably be an ESP32, that receives the ESP now audio and converts into a standardized audio-over-ip protocol, e.g. VBAN.

Related interesting stuff:

• https://www.hackster.io/julianfschroeter/esp32-voice-streamer-52bd7e
• ESP now throughput https://hackaday.io/project/166868-my-attempt-at-an-esp-now-mesh/log/166398-072419-maximum-transmission-throughput-of-esp-now
• ESP audio playback https://github.com/earlephilhower/ESP8266Audio