ESP32 Bluetooth Low Energy (BLE) on Arduino IDE | Random Nerd Tutorials
Using an ESP32 and PCM5102 as a Bluetooth audio receiver – Winko Erades
Bluetooth A2DP - Streaming from an Analog Microphone - Phil Schatzmann
A Basic Introduction to ESP32 Bluetooth – Matha Electronics
A Generic Architecture for ESP32-A2DP/WLED Sound-reactive Setups - Projects - WLED
GitHub - pschatzmann/ESP32-A2DP: A Simple ESP32 Bluetooth A2DP Library (to implement a Music Receiver or Sender) that supports Arduino, PlatformIO and Espressif IDF