Nucleo-f401re: No device found on target

Karthi_electro · ‎2026-02-18

Unable 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.

Andrew Neil · ‎2026-02-18

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 · ‎2026-02-18

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.

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Gyessine · ‎2026-02-19

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.

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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