3 open source boards using the LM3914

Real designs built with the LM3914, 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 LM3914 in open source designs

The gallery holds 3 open source boards using the LM3914 from 3 GitHub repositories; a typical one measures about 307 × 131.2 mm and carries around 224 components.

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

The most starred is OTTOtact by cester-ino.

Parts used alongside the LM3914

Microcontrollers on boards using the LM3914

AVR/Arduino 2

What boards using the LM3914 are built for

LM3914: common questions

Where can I find a LM3914 reference design?

Each of the 3 boards on this page is a real design using the LM3914. 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 LM3914?

The 74HC125, ATMEGA32U4-AU, FS312F-G, MCP602 and MT3608 appear in the most repositories here.

Which microcontrollers do boards using the LM3914 use?

Most are built on AVR/Arduino (2).

How big is a typical board using the LM3914?

The median is 307 × 131.2 mm, and 100% are two-layer designs.

What is the most popular open source board using the LM3914?

By GitHub stars, OTTOtact by cester-ino, with 49 stars.

Can I simulate one of these boards using the LM3914 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.