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Bluetooth Module Interfacing with ESP8266: Controlling an LED
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![bluetooth - I don't understand a couple of symbols on this diagram](https://i2.wp.com/i.stack.imgur.com/0Llsh.png)
How to program arduino wirelessly over bluetooth
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![Bluetooth Speaker Project - tataylino.com](https://i2.wp.com/tataylino.com/wp-content/uploads/2015/11/alma01_s.png)
Bluetooth Speaker Project - tataylino.com
![Connections of bluetooth module HC05 with Arduino – MechStuff](https://i2.wp.com/mechstuff.com/wp-content/uploads/2016/12/ea1bf70c-b284-4f73-bd53-f1fc0c753843.jpg?fit=1443%2C945)
Connections of bluetooth module HC05 with Arduino – MechStuff
![Home Automation using Arduino and Bluetooth HC-05 Module » ElectroDuino](https://i2.wp.com/www.electroduino.com/wp-content/uploads/2020/06/HC-05-Bluetooth-Module-Pin-Diagram.jpg)
Home Automation using Arduino and Bluetooth HC-05 Module » ElectroDuino
![Bluetooth Module Interfacing with ESP8266: Controlling an LED](https://i2.wp.com/circuitdigest.com/sites/default/files/circuitdiagram_mic/Circuit-Diagram-for-Bluetooth-Module-Interfacing-with-ESP8266.png)
Bluetooth Module Interfacing with ESP8266: Controlling an LED
![How to Program Arduino Wirelessly over Bluetooth](https://i2.wp.com/circuitdigest.com/sites/default/files/circuitdiagram_mic/Arduino-Bluetooth-Schematic.png)
How to Program Arduino Wirelessly over Bluetooth
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![BC04 Class 1 BluetoothModule](https://i2.wp.com/www.oemblue.com/images/BC04Class1 BluetoothModule_clip_image002.gif)
BC04 Class 1 BluetoothModule