Bluetooth

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Bluetooth HC-05

The Bluetooth Module will run at 3.3V, you need a voltage divider for RX line and an Pullup Resistor for the TX Line, like showing in Circuit.

For Programming the Module, you must connect the Key Pin from the BT Module, to the 3,3 V from the Arduino and disconect after.


For Programming use the Serial Console from Arduino and Press "d"