Arduino Bluetooth Circuit Diagram. 12v dc power supply. Sending data to arduino via bluetooth hc05 module has an internal 3 3v regulator and that is why you can connect it to 5v voltage.
Gnd pin of hc 05 bluetooth gnd pin of arduino uno. The code fed to arduino checks the received data and compares it if received data is 1 the led turns on turns off when received data is 0. Ac bulb with holder and wire.
Circuit diagram of arduino bluetooth controlled robotic arm.
Int button1state 0. Open the serial monitor and watch the received data. Tx o pin of bluetooth mate arduino d2 int bluetoothrx 3. Let us start with the circuit diagram of the arduino bluetooth controlled robotic arm project.
