1 open source board using the S4_FR
Real designs built with the S4_FR, 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.
IceyPlazzaThe S4_FR in open source designs
The gallery holds 1 open source boards using the S4_FR from 1 GitHub repository; a typical one measures about 111.4 × 40.9 mm and carries around 19 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is EWB-EPA-Rainworks by IceyPlazza.
Microcontrollers on boards using the S4_FR
What boards using the S4_FR are built for
S4_FR: common questions
Where can I find a S4_FR reference design?
Each of the 1 boards on this page is a real design using the S4_FR. 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 S4_FR use?
Most are built on ESP8266 (1).
How big is a typical board using the S4_FR?
The median is 111.4 × 40.9 mm, and 100% are two-layer designs.
What is the most popular open source board using the S4_FR?
By GitHub stars, EWB-EPA-Rainworks by IceyPlazza, with 5 stars.
Can I simulate one of these boards using the S4_FR 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.