I have designed two identical PCB boards and I used stm32f103rbt6 microcontroller.
One of them works properly but the other one has a problem which I cannot understand.
The micro programs successfully but it is not working!!!!
I have checked every traces and ICs on the PCB board and there in no problem.
I wonder if you could help me in finding the problem.
Is it possible while soldering, micro find some problems?
(Both micros have the same program.)