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HC-05 Bluetooth Module - Tutorial, Arduino Interface - Tutorial
Diy bluetooth speaker amplifier Bluetooth esp8266 module hc circuit diagram interfacing connect nodemcu led shown below simple very connections Hc-05 bluetooth module
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Bluetooth module interfacing with esp8266: controlling an led .
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HC-05 Bluetooth Module - Tutorial, Arduino Interface - Tutorial
Bluetooth Module Interfacing with ESP8266: Controlling an LED