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Add Bluetooth to Arduino and ESP8266 easily using RYB2340 module

I’ve been testing out the RYB2340 Bluetooth module, and it’s honestly one of the simplest ways I’ve found to add wireless ...
EDN

Bluetooth Module -with integrated codec and antenna

Free2Move AB has released the F2M03AC2 Bluetooth module, provided with a codec for audio transfer. The antenna is integrated therefore no RF-design is needed. The module is also provided with a ...