2 open source boards using the SI8540
Real designs built with the SI8540, 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 SI8540 in open source designs
The gallery holds 2 open source boards using the SI8540 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 SI8540
What boards using the SI8540 are built for
SI8540: common questions
Where can I find a SI8540 reference design?
Each of the 2 boards on this page is a real design using the SI8540. 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 SI8540 use?
Most are built on STM32 (2).
How big is a typical board using the SI8540?
The median is 39 × 25.3 mm, and 100% are two-layer designs.
What is the most popular open source board using the SI8540?
By GitHub stars, OtterIron Devkit by Jana-Marie, with 316 stars.
Can I simulate one of these boards using the SI8540 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.