2 open source boards using the MAX7221xWG
Real designs built with the MAX7221xWG, 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.
Microchip SAMRadioclock
erikvanzijst
282.7 × 19 mm78 parts2LMIT3
ESP327-seg clock
zOnlyKroks
76.2 × 70.3 mm42 parts4LCC0-1.00
The MAX7221xWG in open source designs
The gallery holds 2 open source boards using the MAX7221xWG from 2 GitHub repositories; a typical one measures about 179.5 × 44.7 mm and carries around 60 components.
50% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Radioclock by erikvanzijst.
Microcontrollers on boards using the MAX7221xWG
What boards using the MAX7221xWG are built for
MAX7221xWG: common questions
Where can I find a MAX7221xWG reference design?
Each of the 2 boards on this page is a real design using the MAX7221xWG. 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 MAX7221xWG use?
Most are built on ESP32 (1) and Microchip SAM (1).
How big is a typical board using the MAX7221xWG?
The median is 179.5 × 44.7 mm, and 50% are two-layer designs.
What is the most popular open source board using the MAX7221xWG?
By GitHub stars, Radioclock by erikvanzijst, with 3 stars.
Can I simulate one of these boards using the MAX7221xWG 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.