Now I want sent audio via bluetooth to bluetooth headset. I test with bluetooth module HC-05, HC-06, and BLE4.0 ,but does not work. It can sent string and character only. This project want to sent audio from MP3 module, and control system by Leonardo board
Help to recommend in my work
Thank you, and nice to meet you everybody
I test with bluetooth module HC-05, HC-06, and BLE4.0 ,but does not work. It can sent string and character only.
Wrong. It sends bytes. Those bytes might represent characters that might be collected in an array that is referred to as a string. But, they might represent any other kind of data, too.
This project want to sent audio from MP3 module
How are you getting this audio data from the MP3 module?
Thank you for recommend 
I getting audio from WTV020-SD-16P mp3. module. I want to build send music process the same way smartphone send to bluetooth docking.
Can you describe the way of send audio via bluetooth ?
Can you describe the way of send audio via bluetooth ?
That is trivial. Just use Serial.write() to send this data:
getting audio from WTV020-SD-16P mp3. module.
If you post some code, some links to the hardware, and a schematic, you could, I'm sure, get real help.
have you solved? I have the same problem
I have the same problem
That being the complete inability to answer simple questions?