Here is wiki page with some modules I tested from ali: https://github.com/tomaskovacik/BK3254/wiki/modules-from-ali

Library for BK3254/BK3266 based bluetooth audio module (F-6888/F6988)

This library suppors only BK3266 based module with BT name HY5066 form HYT, it is only receiver module and it is using "ASCI" mode of comunication (AT+,COM+,BT+ commands). This library do not support HY5066SR module (tranmiter/receiver), library for this module is this epository.

Supported commands based on this datasheet translate by www.onlinedoctranslator.com are on this wiki page.

https://github.com/tomaskovacik/kicad-library/blob/master/library/datasheet/F-6888_bk3254/

https://github.com/tomaskovacik/kicad-library/tree/master/library/datasheet/F-6988_BK3266

Tested modules

Here is a wiki page with test result and links to functional modules.

How to install

Follow this link to arduino.cc: https://www.arduino.cc/en/Guide/Libraries#toc5

how to connect BK3254

directly to computer

this is for testing if your module has serial interface enabled:

arduino using software serial (UNO, nano..)

arduino using harware serial (mega ..)

Supported commands and event

For supported commands and events chek this wiki.

Supported functions

For supported functions chek this wiki or check example.

Library variables

On this this wiki page is list and variables which are set by librarie when event is received from module.