10 open source boards using the LM2903
Real designs built with the LM2903, 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.
TI99 22
danwerner21
350 × 224.3 mm242 parts2LNo license50
AVR/ArduinoATMEGA328-Motor-Board
AntonioMR
77 × 100 mm171 parts2LNo license39
STM32Parkbrake
mumme74
101.6 × 114.3 mm353 parts2LNo license7
PICPlantWateringDevice
RobertGawron
48 × 45 mm44 parts4LMIT5
ESP32TI99 22
244 × 244 mm257 parts4LNo license4
FPGAOutput.panel 3x3
Roboy
217 × 139 mm129 parts4LBSD-3-Clause4
FPGAPanel 3x3
217 × 139 mm129 parts4LBSD-3-Clause4
FPGABoard
65 × 39 mm128 parts4LBSD-3-Clause4
Td hv
tdaede
90 × 71 mm60 parts2LNo license370
STM32EP5 rearbox
NTURacingTeam
149 × 79.5 mm229 parts2LNo license4
The LM2903 in open source designs
The gallery holds 10 open source boards using the LM2903 from 8 GitHub repositories; a typical one measures about 125.3 × 107.2 mm and carries around 150 components.
50% are two-layer designs, the rest use four layers or more, and 40% carry an open source license.
The most starred is Td hv by tdaede.
Parts used alongside the LM2903
Microcontrollers on boards using the LM2903
What boards using the LM2903 are built for
LM2903: common questions
Where can I find a LM2903 reference design?
Each of the 10 boards on this page is a real design using the LM2903. 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 LM2903?
The 27C64, 74LS00, 74LS03, 74LS04 and 74LS08 appear in the most repositories here.
Which microcontrollers do boards using the LM2903 use?
Most are built on FPGA (3), STM32 (2), AVR/Arduino (1) and ESP32 (1).
How big is a typical board using the LM2903?
The median is 125.3 × 107.2 mm, and 50% are two-layer designs.
What is the most popular open source board using the LM2903?
By GitHub stars, Td hv by tdaede, with 370 stars.
Can I simulate one of these boards using the LM2903 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.