8 open source boards using the LM2904
Real designs built with the LM2904, 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.
STM32DAC ADC PWM IO
DanielMartensson
100 × 100 mm266 parts4LMIT180
NXPPrecharge
michaelruppe
133 × 98 mm110 parts2LMIT56
NXPPrecharge
LSUTigerRacing
133 × 98 mm113 parts2LNo license7
STM32Xtec uc ip main
ADFTech
190 × 109 mm538 parts2LNo license0
Analog audio visualizer
alimleahat
130 × 100 mm65 parts2LNo license0
STM32DAC ADC PWM IO BACK UP
100 × 100 mm266 parts4LMIT180
BPSD-2025
68.5 × 43 mm50 parts2LNo license7
Poncho Procesador de Audio
brengi
85.9 × 137 mm83 parts2LNo license7
The LM2904 in open source designs
The gallery holds 8 open source boards using the LM2904 from 6 GitHub repositories; a typical one measures about 115 × 100 mm and carries around 112 components.
75% are two-layer designs, the rest use four layers or more, and 38% carry an open source license.
The most starred is DAC ADC PWM IO by DanielMartensson.
Parts used alongside the LM2904
What boards using the LM2904 are built for
LM2904: common questions
Where can I find a LM2904 reference design?
Each of the 8 boards on this page is a real design using the LM2904. 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 LM2904?
The LM2902, 4N35, LM1117-5.0, LM331 and LM393 appear in the most repositories here.
Which microcontrollers do boards using the LM2904 use?
Most are built on STM32 (3) and NXP (2).
How big is a typical board using the LM2904?
The median is 115 × 100 mm, and 75% are two-layer designs.
What is the most popular open source board using the LM2904?
By GitHub stars, DAC ADC PWM IO by DanielMartensson, with 180 stars.
Can I simulate one of these boards using the LM2904 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.