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Digitally-Controlled Linear Power Supply Based on STM32 (Open Source)

IIvan.12
Associate II

Hi all,

I’d like to share with you a project I recently completed – a digitally-controlled linear power supply built around the STM32F030CCT6 microcontroller.

The power stage uses a classic analog linear regulator topology, known for its simplicity, reliability, and low output noise. To bring it into the modern age, I’ve added:

:small_blue_diamond:Digital control and monitoring using STM32F030CCT6
:small_blue_diamond:LCD display with rotary encoder for local control
:small_blue_diamond:Remote control via I²C interface
:small_blue_diamond:Possibility to link and control multiple units in coordination
:small_blue_diamond:Fully open source – schematics, firmware, and documentation available

This is a well-working and stable design, ideal for home-built lab power supplies. It’s intended for electronics hobbyists who want a practical, reproducible, and expandable project that combines classic analog performance with basic digital control features.

:link:Project page: https://www.stm32dds.tk/stm32-psu A link to Telegram is provided at the bottom of the page.

PSU_front_active.png

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