5 open source boards using the SP721APP
Real designs built with the SP721APP, 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.
DP1600i
Hocus-Pocus
120.4 × 100.1 mm121 parts2LNo license1
C816Pro
rjacobs1969
159.9 × 119.3 mm105 parts4LNo license0
Single VR Conditioner
26.7 × 26.7 mm12 parts2LNo license1
AVR/Arduino0.4
speeduino
100 × 100 mm127 parts2LNo license281
Speeduino Dual Opto Board
27.2 × 31.2 mm10 parts2LNo license1
The SP721APP in open source designs
The gallery holds 5 open source boards using the SP721APP from 3 GitHub repositories; a typical one measures about 100 × 100 mm and carries around 105 components.
80% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is 0.4 by speeduino.
Parts used alongside the SP721APP
Microcontrollers on boards using the SP721APP
SP721APP: common questions
Where can I find a SP721APP reference design?
Each of the 5 boards on this page is a real design using the SP721APP. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the SP721APP?
The MPX4250AP, NCV7805BTG, TC4424AVPA and ULN2003 appear in the most repositories here.
Which microcontrollers do boards using the SP721APP use?
Most are built on AVR/Arduino (1).
How big is a typical board using the SP721APP?
The median is 100 × 100 mm, and 80% are two-layer designs.
What is the most popular open source board using the SP721APP?
By GitHub stars, 0.4 by speeduino, with 281 stars.
Can I simulate one of these boards using the SP721APP 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.