I wanted a simple BT transmitter for my ESP32 Web Radio so I tested this one out.
► JLCPCB Only $2 for PCB Prototype any colour [ Ссылка ]

You can either use this as-is, or connect it up to the serial pins of your Arduino to manage it. Very simple with excellent sound quality.

HARDWARE

Bluetooth Audio Transmitter Module Board 4.1 Stereo Audio GFSK Transceiver Wireless Speaker Headphones KCX_BT_EMITTER 5V
NB: change the delivery country to yours (at the top of the screen)
[ Ссылка ]

Typical small 2.4GHz antenna with lead and tiny plug suitable for this board:
[ Ссылка ]

Anker Bluetooth Speaker I used in the demo, small but sounds OK.
Can play from SD card, AUX in, FM Radio and Bluetooth.
[ Ссылка ]

DOCUMENTATION

► Utilities to help program the KCX_BT_EMITTER by Mark-MD047
[ Ссылка ]

► Electro-Tech-Online (aka Dr G) with details of AT commands (and more) for the KCX_BT_EMITTER
[ Ссылка ]

► Partly translated documentation for AT commands
[ Ссылка ]

► AT Command List for ESP (Espressif)
[ Ссылка ]

► List of all my videos
(Special thanks to Michael Kurt Vogel for compiling this)
[ Ссылка ]

If you like this video please give it a thumbs up, share it and if you're not already subscribed please consider doing so and joining me on my Arduinite (and other μControllers) journey

My channel, GitHub and blog are here:
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