这是一个开源的双模蓝牙协议栈(bluetooth.stack)(btstack),可以运行在STM32,Linux.，包含HCI,L2CAP,SDP,RFCOMM,HFP,SPP,A2DP,AVRCP,AVDTP,AVCTP,OBEX,PBAP等协议，后续会继续维护，以达到商用的目的

An Apple iAP to Bluetooth AVRCP program designed to interface with a 2012 Hyundai Elantra

Allows media play back from Android with bluetooth A2DP + AVRCP via Raspberry pi showing current playing track information and maintaining wheel controls for next and previous track.

BMW I/K-Bus SDK

Circuit Python iPod Apple Accessory Protocol Bridge to Bluetooth A2DP/AVRCP for BMW 6FL option.

Virtual Bluetooth Car Kit for Bluez

ESP32 smart embedded platform for real-time device control, audio streaming, Android communication, and custom TTS.

One-click Windows system-tray toggle for Bluetooth Absolute Volume

Remap the Nothing Headphones (1) voice assistant button to any keystroke on Windows