Arduino, ESP32 and Android phone communicating via sound

Project: https://github.com/ggerganov/ggwave
Arduino library: https://github.com/ggerganov/ggwave-a...

Waver app:
Play Store: https://play.google.com/store/apps/de...
App Store: https://apps.apple.com/us/app/waver-d...
Web: https://waver.ggerganov.com