4 open source boards using the LM7812
Real designs built with the LM7812, 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.
AVR/ArduinoPower Supply (plus UBBB 32u4 rev 1.2)
thebiguno
99.1 × 99.1 mm189 parts2LNo license75
ESP32Precision-Analog-Front-End
LemonAidLee
78 × 99.5 mm29 parts2LCERN-OHL-P-2.00
AVR/ArduinoAdjustable Modular Power Supply
36.8 × 52.7 mm183 parts2LNo license75
RP2040/RP2350Output controller
mekatrol
238 × 122 mm161 parts2LNo license0
The LM7812 in open source designs
The gallery holds 4 open source boards using the LM7812 from 3 GitHub repositories; a typical one measures about 88.5 × 99.3 mm and carries around 172 components.
100% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is Power Supply (plus UBBB 32u4 rev 1.2) by thebiguno.
Microcontrollers on boards using the LM7812
What boards using the LM7812 are built for
LM7812: common questions
Where can I find a LM7812 reference design?
Each of the 4 boards on this page is a real design using the LM7812. 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 LM7812 use?
Most are built on AVR/Arduino (2), ESP32 (1) and RP2040/RP2350 (1).
How big is a typical board using the LM7812?
The median is 88.5 × 99.3 mm, and 100% are two-layer designs.
What is the most popular open source board using the LM7812?
By GitHub stars, Power Supply (plus UBBB 32u4 rev 1.2) by thebiguno, with 75 stars.
Can I simulate one of these boards using the LM7812 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.