TTGO-T5S-2.7 inch-Epaper
Bluetooth audio
https://github.com/LilyGO/TTGO-T5S-Epaper/tree/master/BT_SPEAKER
DEMO:1.Upload the program
Here we need to use ESP FLASH DOWNLOAD TOOL, if you did not download this software. Here is a link:
http://espressif.com/en/support/download/other-tools