2 open source boards using the 40PIN_Breakout
Real designs built with the 40PIN_Breakout, 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.
MCU BaseBoard
ExploreEmbedded
180 × 125 mm146 parts2LNo license25
MCU BaseBoard
180 × 125 mm146 parts2LNo license17
The 40PIN_Breakout in open source designs
The gallery holds 2 open source boards using the 40PIN_Breakout from 2 GitHub repositories; a typical one measures about 180 × 125 mm and carries around 146 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is MCU BaseBoard by ExploreEmbedded.
40PIN_Breakout: common questions
Where can I find a 40PIN_Breakout reference design?
Each of the 2 boards on this page is a real design using the 40PIN_Breakout. 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 40PIN_Breakout?
The 24C16, 7805, DS1307, L293D and LCD-jhd12864e-xl appear in the most repositories here.
How big is a typical board using the 40PIN_Breakout?
The median is 180 × 125 mm, and 100% are two-layer designs.
What is the most popular open source board using the 40PIN_Breakout?
By GitHub stars, MCU BaseBoard by ExploreEmbedded, with 25 stars.
Can I simulate one of these boards using the 40PIN_Breakout 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.