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Hello, I am using a Arduino UNO (Rev3) with an HC-05 on Pin 9 / 10. I was trying to send data from an analog input via bluetooth to processing listening on the bluetooth com port created by Windows 10. The HC-05 is paired with Windows but not disconnects after a few seconds after pairing. The HC-05 com port is visibile when printing out Serial.list() but port.available() prints out 0. Can't figure out why this is not working. I already reinstalled my bluetooth drivers and used another Windows 10 computer with built in bluetooth module.
I used the following app ( https://play.google.com/store/apps/details?id=project.bluetoothterminal ) to test my arduino setting, and I successfully receive the data I am sending via serial.