2 open source boards using the BQ21040
Real designs built with the BQ21040, 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.
Cphp82001
calcpsu
56 × 44 mm26 parts2LCC-BY-NC-4.04
Microchip SAMFpgaboy
Wren6991
50 × 50 mm89 parts4LNo license508
The BQ21040 in open source designs
The gallery holds 2 open source boards using the BQ21040 from 2 GitHub repositories; a typical one measures about 53 × 47 mm and carries around 58 components.
50% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is Fpgaboy by Wren6991.
Microcontrollers on boards using the BQ21040
What boards using the BQ21040 are built for
BQ21040: common questions
Where can I find a BQ21040 reference design?
Each of the 2 boards on this page is a real design using the BQ21040. 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 BQ21040 use?
Most are built on Microchip SAM (1).
How big is a typical board using the BQ21040?
The median is 53 × 47 mm, and 50% are two-layer designs.
What is the most popular open source board using the BQ21040?
By GitHub stars, Fpgaboy by Wren6991, with 508 stars.
Can I simulate one of these boards using the BQ21040 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.