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Visitor II
Feb 18, 2026 3:08 PM UTC
Question

Nucleo-f401re: No device found on target

Screenshot 2026-02-18 200213.pngUnable to run the program in the MCU. When I try to execute the program in my Nucleof401re board, The IDE says it is not able to detect the board. I'm literally struck here just to blink an led. I kindly appreciate any possible solutions. But do explain it in simple terms as I'm new to this kind of stuffs.

 

3 replies

Andrew Neil
Super User
Feb 18, 2026 3:23 PM UTC

Welcome to the forum.

You need to give some more details about your setup - see: How to write your question to maximize your chances to find a solution

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.
TDK
Feb 18, 2026 3:24 PM UTC

Can you connect with STM32CubeProgrammer?

Ensure the USB cable is not power-only. The LED will be solid red when the USB connects. If it's blinking between red and off, there is no connection.

"If you feel a post has answered your question, please click ""Accept as Solution""."
Gyessine
ST Technical Moderator
Feb 19, 2026 8:51 AM UTC

Hello @Karthi_electro and welcome to STcommunity
Can you please check if these steps are established:

  • Check if USER_LED3 is turned on.
  • Check if USER_LD1 is green.
  • Attempt to connect to the board using STM32CubeProgrammer. If the connection is successful, what's the detected voltage.

Gyessine_0-1771490735165.png

  • Check that CN2 is selected.

You can check section 6.1 from the STM32 Nucleo-64 boards (MB1136) - User manual
BR
Gyessine

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