I have an RN-41 bluetooth module connected to an MSP430. I want to connect the RN-41 to an Android cellphone. Just by having power to the Bluetooth module, the cellphone finds the device. However, it is not able to make pairing the only documentation that I find about pairing on the RN-41 says that the default key for pairing should be 1234. In any case the cellphone doesn't even ask for the pass key but shows an error saying that is not able to pair. Can anyone provide some guidance?
Electronic – RN41 Bluetooth module with MSP430 to Android device
androidbluetoothmsp430
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Best Answer
The problem I was actually having with the module, was a hardware problem. I tried to connect the Bluetooth module power to the VCC pin of the target board of the MSP. It is a 3.3v source, which is appears to be compatible. But the maximum current that could pass through that pin was 15mA, which is enough to set the device discoverable but it stays short when trying to establish a connection (needs around 35mA). Hence, I was able to see it, but got an error upon establishing a connection. Hope this helps somebody else in the future.