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harry123
Associate III
October 4, 2024
Solved

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

  • October 4, 2024
  • 2 replies
  • 1448 views

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

Best answer by QSHAO.1

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.

2 replies

Andrew Neil
Andrew Neil
Super User
October 4, 2024

AndrewNeil_0-1728034381590.png

 

Also check the schematics...

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    QSHAO.1
    QSHAO.1Best answer
    ST Employee
    October 24, 2024

    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.

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