Hi sp computing
I used my functioning Uno smd and uploaded the sketch. No error message.
I connected both boards as discribed with separate wires.
The defective board:
- shows the green power LED on.
- shows the LED 13 blinking identical to the programmer board. (ah! it ain't broken!)
I open the serial monitor and adjust to 115200 baud.
I hit reset on the programmer board.
The monitor shows:
Atmega chip programmer.
Written by Nick Gammon.
That's it, no further question.
I sent "U", nothing.
I sent "G", nothing.
What I am doing wrong?