3 open source boards using the 6N139
Real designs built with the 6N139, 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.
OpenEuroBoard
sensai7
300 × 100 mm135 parts2LGPL-3.039
TI MSP430/CCCCVDrum
106 × 54.5 mm38 parts2LMIT14
ESP32BarSync
barna81
95 × 60 mm16 parts2LCC-BY-NC-4.01
The 6N139 in open source designs
The gallery holds 3 open source boards using the 6N139 from 3 GitHub repositories; a typical one measures about 106 × 60 mm and carries around 38 components.
100% are two-layer designs, the rest use four layers or more, and 67% carry an open source license.
The most starred is OpenEuroBoard by sensai7.
Microcontrollers on boards using the 6N139
What boards using the 6N139 are built for
6N139: common questions
Where can I find a 6N139 reference design?
Each of the 3 boards on this page is a real design using the 6N139. 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 6N139 use?
Most are built on ESP32 (1) and TI MSP430/CC (1).
How big is a typical board using the 6N139?
The median is 106 × 60 mm, and 100% are two-layer designs.
What is the most popular open source board using the 6N139?
By GitHub stars, OpenEuroBoard by sensai7, with 39 stars.
Can I simulate one of these boards using the 6N139 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.