My project is to be able to toggle an LED using a GUI written in java over bluetooth, by using a HC-05 module. I am using pin 2 to control the LED. I have wired a voltage divider between the Arduino and the HC-05 as the HC-05 cannot take the full 5V. However, the LED doesn't go on when I click the …

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

xfpd July 14, 2025, 5:14pm 15

Would you show what the Mac was creating so others might use this to identify their (future) issues? Tnx.

Topic		Replies	Views
Bluetooth HC-05 & ArduDroid - Hello World Networking, Protocols, and Devices	7	15959	May 6, 2021
Problem with hc-05 bluetooth connection General Guidance	18	2689	May 5, 2021
HC-05 Bluetooth module Arduino Uno problem Networking, Protocols, and Devices	11	12456	May 6, 2021
LED con Arduino y HC05 Software	3	6973	May 7, 2021
Arduino + HC-05 + App Inventor General Guidance	16	4467	May 5, 2021