Blinking a LED on a breadboard from STM32F103RB nucleo board

Microcontrollers
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Hello Dears,

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

RGB1
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6273ad1c-2909-4f95-8d88-98fcb0e858ae1536×2048 190 KB

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28941b7f-a0a6-4d0d-81cb-03cf0346c2c91536×2048 221 KB

Sincerly,

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Hi,

In STM32F103RB Nucleo boards the Pin PA2 and PA3 are used to target UART2 communication between STM32 and ST-LINK MCU, in order to support virtual COM port. It’s better to use another pin for blinking the LED.

USART
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Go through the user manual of your Nucleo board (Section 6.8).

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Thanks I’ll go for it.

4

The led is blinking. Thanks @Prototype

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