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