7 open source boards using the FE1.1s

Real designs built with the FE1.1s, 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.

The FE1.1s in open source designs

The gallery holds 7 open source boards using the FE1.1s from 4 GitHub repositories; a typical one measures about 95.2 × 69 mm and carries around 85 components.

71% are two-layer designs, the rest use four layers or more, and 14% carry an open source license.

The most starred is 6xUSB PowMet by aleksejm.

Parts used alongside the FE1.1s

Microcontrollers on boards using the FE1.1s

FE1.1s: common questions

Where can I find a FE1.1s reference design?

Each of the 7 boards on this page is a real design using the FE1.1s. 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 FE1.1s use?

Most are built on ESP32 (2), ESP8266 (2), AVR/Arduino (1) and RP2040/RP2350 (1).

How big is a typical board using the FE1.1s?

The median is 95.2 × 69 mm, and 71% are two-layer designs.

What is the most popular open source board using the FE1.1s?

By GitHub stars, 6xUSB PowMet by aleksejm, with 7 stars.

Can I simulate one of these boards using the FE1.1s 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.

Browse boards by part