I use an STM32F103RB. I have recently learned some ways to blink a led (the one that is on the Nucleo board). Today I want to blink a given led from a breadboard.
I have tried but it does not work at all and I want to know what is going on and how I can fix it.
To better illustrate my wiring, note that : I have used a resistance of 270 ohm, The blue wire is connected on the ground pin of the nucleo board to the negative of my breadboard, a brown wire is connected from the PA3 of the pin number 37 the resistance on my breadboard