2 open source boards using the GY-91
Real designs built with the GY-91, 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.
STM32Noah hardware
GonzaCerv
120 × 100 mm122 parts2LMIT28
RP2040/RP2350Default
pete529
14.4 × 40 mm21 parts2LMIT4
The GY-91 in open source designs
The gallery holds 2 open source boards using the GY-91 from 2 GitHub repositories; a typical one measures about 67.2 × 70 mm and carries around 72 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Noah hardware by GonzaCerv.
Microcontrollers on boards using the GY-91
What boards using the GY-91 are built for
GY-91: common questions
Where can I find a GY-91 reference design?
Each of the 2 boards on this page is a real design using the GY-91. 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 GY-91 use?
Most are built on RP2040/RP2350 (1) and STM32 (1).
How big is a typical board using the GY-91?
The median is 67.2 × 70 mm, and 100% are two-layer designs.
What is the most popular open source board using the GY-91?
By GitHub stars, Noah hardware by GonzaCerv, with 28 stars.
Can I simulate one of these boards using the GY-91 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.