6 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.
RP2040/RP2350AS3397 proto DIP
PhysicsDptAngers
167.6 × 97.5 mm138 parts2LMIT87
AVR/ArduinoPower Supply (plus UBBB 32u4 rev 1.2)
thebiguno
99.1 × 99.1 mm189 parts2LNo license75
Hvsupply
xunil
127 × 127 mm70 parts2LNo license5
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 6 open source boards using the LM7812 from 5 GitHub repositories; a typical one measures about 113 × 99.3 mm and carries around 150 components.
100% are two-layer designs, the rest use four layers or more, and 33% carry an open source license.
The most starred is AS3397 proto DIP by PhysicsDptAngers.
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 6 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), RP2040/RP2350 (2) and ESP32 (1).
How big is a typical board using the LM7812?
The median is 113 × 99.3 mm, and 100% are two-layer designs.
What is the most popular open source board using the LM7812?
By GitHub stars, AS3397 proto DIP by PhysicsDptAngers, with 87 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.