README.md


Bench Power Supply PCB

This repo contains project files for a bench top power supply I designed for my home lab.

Requirements:


Small for crammed work spaces
Adjustable and designed to store values on each power cycle
2 layer board - V2.0 bumped to 4 layer
Digitally controlled - no mechanical parts
Clear annunciators
Uses an external AC-DC converter
At least a 2A max load
Cover most logic levels
Possibly have preset buttons


Built With


<![CDATA[]]>KiCad<![CDATA[]]> - Schematic capture and layout V1.0
<![CDATA[]]>VS Code<![CDATA[]]> - Used to develop firmware V1.0
<![CDATA[]]>Fusion 360<![CDATA[]]> - Used to design 3-D models for packages
<![CDATA[]]>Altium Designer<![CDATA[]]> - Schematic capture and layout V2.0
<![CDATA[]]>STM32CubeIDE<![CDATA[]]> - Used to develop firmware V2.0


Notes:


The PCB uses a 5/5mil DRC constraint
The top of the PCB acts as the product face plate
Non-standard footprint 3-D models have been provided in the STEP file format


To Do


[x] Connect OLED reset line to a GPIO
[x] Add reset pull up to MCU
[x] ANDed interrupt for buttons
[ ] Add config flash storage
[ ] Bigger display?
[x] Reduce inductor footprint
[x] Add debouncing either in hardware or firmware, ideally both
[x] Add a reinit function


Authors


Aditya Sehgal - PCB Layout, Firmware, 3-D Modelling - <![CDATA[]]>Adsehgal<![CDATA[]]>