4 open source boards using the SP721
Real designs built with the SP721, 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.
AVR/ArduinoKlxecu
JourneyMan61
129.5 × 73.7 mm70 parts2LNo license0
AVR/ArduinoNO2C
MIsfitMatty
99.4 × 53.7 mm78 parts2LGPL-2.00
AVR/ArduinoNO2C.EVO
99.4 × 53.7 mm73 parts2LGPL-2.00
AVR/ArduinoNO2C-W-STEPPER
99.4 × 53.7 mm72 parts2LGPL-2.00
The SP721 in open source designs
The gallery holds 4 open source boards using the SP721 from 2 GitHub repositories; a typical one measures about 99.4 × 53.7 mm and carries around 73 components.
100% are two-layer designs, the rest use four layers or more, and 75% carry an open source license.
The most starred is NO2C by MIsfitMatty.
Microcontrollers on boards using the SP721
What boards using the SP721 are built for
SP721: common questions
Where can I find a SP721 reference design?
Each of the 4 boards on this page is a real design using the SP721. 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 SP721 use?
Most are built on AVR/Arduino (4).
How big is a typical board using the SP721?
The median is 99.4 × 53.7 mm, and 100% are two-layer designs.
What is the most popular open source board using the SP721?
By GitHub stars, NO2C by MIsfitMatty, with 0 stars.
Can I simulate one of these boards using the SP721 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.