5 open source boards using the LM317_SOT-223
Real designs built with the LM317_SOT-223, 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.
Twangilizer
shannon-greenlight
101.3 × 110 mm454 parts4LNo license1
ESP32Clean room slave
trieuhuyduc
165 × 110 mm207 parts2LNo license1
Sensorboard
Cluradev
73 × 50 mm22 parts2LNo license119
Pipes main
70.8 × 110 mm207 parts4LNo license2
STM32Jantteri motor pwr
OJ2016
137.7 × 45 mm72 parts2LNo license1
The LM317_SOT-223 in open source designs
The gallery holds 5 open source boards using the LM317_SOT-223 from 5 GitHub repositories; a typical one measures about 101.3 × 110 mm and carries around 207 components.
60% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is Sensorboard by Cluradev.
What boards using the LM317_SOT-223 are built for
LM317_SOT-223: common questions
Where can I find a LM317_SOT-223 reference design?
Each of the 5 boards on this page is a real design using the LM317_SOT-223. 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 LM317_SOT-223?
The CD4017, CD4046 and TL072CP appear in the most repositories here.
Which microcontrollers do boards using the LM317_SOT-223 use?
Most are built on ESP32 (1) and STM32 (1).
How big is a typical board using the LM317_SOT-223?
The median is 101.3 × 110 mm, and 60% are two-layer designs.
What is the most popular open source board using the LM317_SOT-223?
By GitHub stars, Sensorboard by Cluradev, with 119 stars.
Can I simulate one of these boards using the LM317_SOT-223 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.