1 open source board using the 3V3 PSU
Real designs built with the 3V3 PSU, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
fordp2002The 3V3 PSU in open source designs
The gallery holds 1 open source boards using the 3V3 PSU from 1 GitHub repository; a typical one measures about 142 × 100 mm and carries around 125 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is ZX21 by fordp2002.
Microcontrollers on boards using the 3V3 PSU
What boards using the 3V3 PSU are built for
3V3 PSU: common questions
Where can I find a 3V3 PSU reference design?
Each of the 1 boards on this page is a real design using the 3V3 PSU. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the 3V3 PSU use?
Most are built on ESP32 (1).
How big is a typical board using the 3V3 PSU?
The median is 142 × 100 mm, and 100% are two-layer designs.
What is the most popular open source board using the 3V3 PSU?
By GitHub stars, ZX21 by fordp2002, with 9 stars.
Can I simulate one of these boards using the 3V3 PSU before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.