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Topic: Power problems connecting external device to Arduino UNO R3 (Read 2 times) previous topic - next topic


And the Bluetooth Module? Can I have multiple wires from the 5V pin?  I don't think the 3.3 V pin is enough to power the Bluetooth module.



Check the bluetooth datasheet- it may well be a 3.3V only part, and 5V would damage it.
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