3 open source boards using the LM337_TO3

Real designs built with the LM337_TO3, 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.

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The LM337_TO3 in open source designs

The gallery holds 3 open source boards using the LM337_TO3 from 2 GitHub repositories; a typical one measures about 104.2 × 144.9 mm and carries around 33 components.

100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.

The most starred is +-12v by larsimmisch.

Microcontrollers on boards using the LM337_TO3

LM337_TO3: common questions

Where can I find a LM337_TO3 reference design?

Each of the 3 boards on this page is a real design using the LM337_TO3. 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 LM337_TO3 use?

Most are built on RP2040/RP2350 (2).

How big is a typical board using the LM337_TO3?

The median is 104.2 × 144.9 mm, and 100% are two-layer designs.

What is the most popular open source board using the LM337_TO3?

By GitHub stars, +-12v by larsimmisch, with 0 stars.

Can I simulate one of these boards using the LM337_TO3 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.

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