7 open source boards using the TRRS
Real designs built with the TRRS, 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.
Mongus48
ChrisChrisLoLo
228.6 × 100 mm111 parts2LGPL-3.0334
Nordic nRFKlein
snsten
148 × 97.2 mm69 parts2LNo license285
AVR/ArduinoRailroad keyboard
nopunin10did
462 × 116.9 mm219 parts2LCC-BY-SA-4.035
Raspberry PiLeft
Hex-4
127.8 × 107 mm49 parts2LMIT11
Beyblock20
95.3 × 100 mm51 parts2LGPL-3.0334
AVR/ArduinoRailroad keyboard pcb only
448.5 × 103.1 mm217 parts2LCC-BY-SA-4.035
Raspberry PiRight
130 × 109 mm49 parts2LMIT11
The TRRS in open source designs
The gallery holds 7 open source boards using the TRRS from 4 GitHub repositories; a typical one measures about 147.9 × 103.1 mm and carries around 69 components.
100% are two-layer designs, the rest use four layers or more, and 86% carry an open source license.
The most starred is Mongus48 by ChrisChrisLoLo.
Microcontrollers on boards using the TRRS
What boards using the TRRS are built for
TRRS: common questions
Where can I find a TRRS reference design?
Each of the 7 boards on this page is a real design using the TRRS. 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 TRRS use?
Most are built on Raspberry Pi (2), AVR/Arduino (2) and Nordic nRF (1).
How big is a typical board using the TRRS?
The median is 147.9 × 103.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the TRRS?
By GitHub stars, Mongus48 by ChrisChrisLoLo, with 334 stars.
Can I simulate one of these boards using the TRRS 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.