20 open source boards using the Teensy4.1
Real designs built with the Teensy4.1, 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.
NXPTeensy eurorack
newdigate
118.1 × 101.6 mm100 parts2LMIT258
NXP00Key
ZeroZeroOne-dev
304.8 × 170.8 mm256 parts2LGPL-3.0243
NXPTSynth Teensy 4.1
Electrotechnique
312 × 140 mm105 parts2LNo license180
NXPLED controller
Llamero
100 × 100 mm38 parts2LCC-BY-SA-4.08
Nordic nRFTympan Rev F
Tympan
38 × 74 mm86 parts4LCERN-OHL-P-2.07
NXPSigyn
wimblerobotics
96.5 × 76.2 mm73 parts4LApache-2.07- schematic only · 4 partsNXP
Cycloidal-Actuator-Design-Project
ratdo6
4 partsNo license3 
NXPAvionics project
TUSI-KHU
127.5 × 62 mm74 parts2LApache-2.02
ESP32Main Board
Ensmasteel
200 × 100 mm48 parts2LNo license2
NXPMcguitarpedal
frsaba
123 × 113.5 mm113 parts2LNo license0
NXPExoskeleton
Bihyungbetter
114.3 × 134.5 mm55 parts4LNo license0
NXPXTMAX
MicroCoreLabs
81 × 46 mm14 parts4LNo license532
NXPAvionics final 260706
127.5 × 62 mm67 parts2LApache-2.02
NXPCcm
Anteater-Electric-Racing
125 × 100 mm96 parts2LNo license0
NXPMCL68
31.6 × 84.1 mm13 parts4LNo license532
NXPTeensy 16
computergeek1507
148.8 × 92.6 mm88 parts2LCERN-OHL-S-2.078
NXPMCL6809
32.3 × 61 mm7 parts4LNo license532
NXPMCL65+
72.6 × 64.1 mm6 parts2LNo license532
NXPMCLZ8
37.1 × 61.5 mm6 parts4LNo license532
NXPMCLZ8
jeroenhn
41 × 62.6 mm6 parts2LNo license12
The Teensy4.1 in open source designs
The gallery holds 20 open source boards using the Teensy4.1 from 15 GitHub repositories; a typical one measures about 114.3 × 84.1 mm and carries around 61 components.
63% are two-layer designs, the rest use four layers or more, and 40% carry an open source license.
The most starred is XTMAX PCB by MicroCoreLabs.
Parts used alongside the Teensy4.1
Microcontrollers on boards using the Teensy4.1
What boards using the Teensy4.1 are built for
Teensy4.1: common questions
Where can I find a Teensy4.1 reference design?
Each of the 20 boards on this page is a real design using the Teensy4.1. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the Teensy4.1?
The SN65HVD230, SN74LVC573A and Z80CPU appear in the most repositories here.
Which microcontrollers do boards using the Teensy4.1 use?
Most are built on NXP (18), ESP32 (1) and Nordic nRF (1).
How big is a typical board using the Teensy4.1?
The median is 114.3 × 84.1 mm, and 63% are two-layer designs.
What is the most popular open source board using the Teensy4.1?
By GitHub stars, XTMAX PCB by MicroCoreLabs, with 532 stars.
Can I simulate one of these boards using the Teensy4.1 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.