2 open source boards using the AP2204R-3.3
Real designs built with the AP2204R-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.
STM32OtterIron Devkit
Jana-Marie
28 × 30 mm67 parts2LNo license316
STM32OtterIron PRO Bot
50 × 20.5 mm43 parts2LNo license316
The AP2204R-3.3 in open source designs
The gallery holds 2 open source boards using the AP2204R-3.3 from 1 GitHub repository; a typical one measures about 39 × 25.3 mm and carries around 55 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is OtterIron Devkit by Jana-Marie.
Microcontrollers on boards using the AP2204R-3.3
What boards using the AP2204R-3.3 are built for
AP2204R-3.3: common questions
Where can I find a AP2204R-3.3 reference design?
Each of the 2 boards on this page is a real design using the AP2204R-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 AP2204R-3.3 use?
Most are built on STM32 (2).
How big is a typical board using the AP2204R-3.3?
The median is 39 × 25.3 mm, and 100% are two-layer designs.
What is the most popular open source board using the AP2204R-3.3?
By GitHub stars, OtterIron Devkit by Jana-Marie, with 316 stars.
Can I simulate one of these boards using the AP2204R-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.