Low Peak to peak voltage on my PWM signal

yellow · ‎2026-01-15

Hello I am currently doing a project where I am using a STM32Nucleo-C092RC to generate a PWM signal the only problem is that my peak to peak voltege is only 160 mV. Is there any way to fix it so it is or is my board broken?

TDK · ‎2026-01-15

What pin are you using? Don't use a pin that is already in use.

https://www.st.com/resource/en/schematic_pack/mb2046-c092rc-b03-schematic.pdf

Ensure pin speed is set to VERY HIGH.

Show how you are measuring the peak-peak voltage.

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Andrew Neil · ‎2026-01-15

Welcome to the forum.

As @TDK said, you need to give more information - 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.

Ozone · ‎2026-01-15

Configuring a GPIO as open-drain without attaching a resistor and measuring with a multimeter / scope would produce similiar results.