[SOLVED] Help with using Java GUI to control LED using bluetooth HC-05 module

[cattledog]

@rzprojects

However, it seems like the data is not being transmitted to the Arduino as nothing shows up on the serial monitor3. . The Arduino and the HC-05 are both set to 9600 baud.

A good way to trouble shoot these HC-05/Arduino problems is as follows.

1. Confirm that the program works with input from the ide serial monitor.
2. Add the HC-05 and get it working with a standard phone app like Kai Morich's Serial Bluetooth Terminal
3. Use your custom app.