2 open source boards using the USB-OTG
Real designs built with the USB-OTG, 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.
Open smartwatch light
Open-Smartwatch
36.1 × 36.1 mm51 parts4LGPL-3.0246
Open smartwatch gps
45 × 41 mm67 parts4LGPL-3.0241
The USB-OTG in open source designs
The gallery holds 2 open source boards using the USB-OTG from 2 GitHub repositories; a typical one measures about 40.6 × 38.6 mm and carries around 59 components.
100% use four copper layers or more, and 100% carry an open source license.
The most starred is Open smartwatch light by Open-Smartwatch.
Parts used alongside the USB-OTG
What boards using the USB-OTG are built for
USB-OTG: common questions
Where can I find a USB-OTG reference design?
Each of the 2 boards on this page is a real design using the USB-OTG. 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 USB-OTG?
The BMA400, CH340E, DS3231MZ, GC9A01_IPS_display and MCP73831T-2ACI_OT appear in the most repositories here.
How big is a typical board using the USB-OTG?
The median is 40.6 × 38.6 mm, and 0% are two-layer designs.
What is the most popular open source board using the USB-OTG?
By GitHub stars, Open smartwatch light by Open-Smartwatch, with 246 stars.
Can I simulate one of these boards using the USB-OTG 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.