1 open source board using the 5V->3.3V
Real designs built with the 5V->3.3V, 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.
AravinthPanchThe 5V->3.3V in open source designs
The gallery holds 1 open source boards using the 5V->3.3V from 1 GitHub repository; a typical one measures about 100 × 100 mm and carries around 21 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is AraBase atmega2560 by AravinthPanch.
Microcontrollers on boards using the 5V->3.3V
What boards using the 5V->3.3V are built for
5V->3.3V: common questions
Where can I find a 5V->3.3V reference design?
Each of the 1 boards on this page is a real design using the 5V->3.3V. 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 5V->3.3V use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 5V->3.3V?
The median is 100 × 100 mm, and 100% are two-layer designs.
What is the most popular open source board using the 5V->3.3V?
By GitHub stars, AraBase atmega2560 by AravinthPanch, with 16 stars.
Can I simulate one of these boards using the 5V->3.3V 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.