Nucleo-f446RE: external power supply while using UART and STLINK virtual comport

harry123 · ‎2024-10-03

HI Everyone

I am using Nucleof446RE board for uart communication through usb cable which is also my power supply
Is it possible to use external 5V supply for MCU and use USB cable only for uart communication or any uart to usb converters are needed to communicate to PC.

Thank you

QSHAO.1 · ‎2024-10-24

with setting of jumper JP5, you are allowed to select power supply either from USB connector CN1 or from VIN (pin8) of Arduino connector CN6.

so you just need to set JP5 to 2-3, and connect external DC power to VIN pin (7-12V) to power your board.

Andrew Neil · ‎2024-10-04

Also check the schematics...

QSHAO.1 · ‎2024-10-24

with setting of jumper JP5, you are allowed to select power supply either from USB connector CN1 or from VIN (pin8) of Arduino connector CN6.

so you just need to set JP5 to 2-3, and connect external DC power to VIN pin (7-12V) to power your board.