8 open source boards using the AP2127K-3.3
Real designs built with the AP2127K-3.3, 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.
RP2040/RP2350Rp2350-gpio card
semitov
26 × 30 mm36 parts2LCC-BY-4.0119
Microchip SAMGame and watch swd implant
UlfWetzker
13.9 × 38.5 mm16 parts2LCERN-OHL-1.214
Atfprog hardware
roscopeco
71.1 × 96.2 mm29 parts4LGPL-2.06
APMHat-4-powered
stephendade
65 × 30.5 mm57 parts2LGPL-3.01
STM32Benchy2 Motherboard
Daxxn
159.5 × 105 mm951 parts8LAGPL-3.02
MicroSD to DIP Breakout 74HC4050
vul-os
30.5 × 20.3 mm7 parts2LApache-2.055
STM32Benchy Signal Generator
88 × 82 mm141 parts4LAGPL-3.02
STM32BenchyReloaded VoltMeter
49.5 × 61 mm130 parts2LAGPL-3.02
The AP2127K-3.3 in open source designs
The gallery holds 8 open source boards using the AP2127K-3.3 from 6 GitHub repositories; a typical one measures about 57.3 × 49.8 mm and carries around 47 components.
63% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Rp2350-gpio card by semitov.
Microcontrollers on boards using the AP2127K-3.3
What boards using the AP2127K-3.3 are built for
AP2127K-3.3: common questions
Where can I find a AP2127K-3.3 reference design?
Each of the 8 boards on this page is a real design using the AP2127K-3.3. 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 AP2127K-3.3 use?
Most are built on STM32 (3), RP2040/RP2350 (1) and Microchip SAM (1).
How big is a typical board using the AP2127K-3.3?
The median is 57.3 × 49.8 mm, and 63% are two-layer designs.
What is the most popular open source board using the AP2127K-3.3?
By GitHub stars, Rp2350-gpio card by semitov, with 119 stars.
Can I simulate one of these boards using the AP2127K-3.3 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.