One HC-05 is connected to an Uno, the other to a Mega. They pair up fine (based on both LEDs blinking twice about 5 seconds apart) after uploading a blank sketch to both, disconnecting them from the laptop, and powering both up, so I believe I have the AT commands correct. The pairing is stable an…

Two HC-05 modules won't stay paired

xfpd May 8, 2025, 1:41am 3

Excellent description of your code. Show your code and draw your circuit.

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