10 open source boards using the LM555
Real designs built with the LM555, 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.
BE6502 SBC
tebl
99.1 × 99.1 mm61 parts2LCERN-OHL-1.2128
Vic2020mainboard
danwerner21
357.8 × 124.5 mm127 parts2LNo license78
Commodore-Plus4
StormTrooper
284.7 × 158.9 mm212 parts2LNo license20
10band nixie
davemuscle
274.1 × 114.7 mm312 parts2LNo license7
TTL 6510 Computer
StefansAI
368.3 × 215.9 mm330 parts2LNo license1
Commodore Plus 4
baldengineer
284.7 × 158.9 mm212 parts2LCC-BY-4.0442
BE6502 Clock
45.7 × 99.1 mm29 parts2LCERN-OHL-1.2128
TTL 6510 Computer
368.3 × 215.9 mm330 parts2LNo license1
Pre charge controller
switchcraft
126 × 52.2 mm56 parts2LNo license6
TimerModule
crempp
90.7 × 58.6 mm17 parts2LNo license4
The LM555 in open source designs
The gallery holds 10 open source boards using the LM555 from 8 GitHub repositories; a typical one measures about 279.4 × 119.6 mm and carries around 170 components.
100% are two-layer designs, the rest use four layers or more, and 30% carry an open source license.
The most starred is Commodore Plus 4 by baldengineer.
Parts used alongside the LM555
What boards using the LM555 are built for
LM555: common questions
Where can I find a LM555 reference design?
Each of the 10 boards on this page is a real design using the LM555. 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 LM555?
The 74LS00, 74LS04, 74LS08, 23128 and 251641 appear in the most repositories here.
How big is a typical board using the LM555?
The median is 279.4 × 119.6 mm, and 100% are two-layer designs.
What is the most popular open source board using the LM555?
By GitHub stars, Commodore Plus 4 by baldengineer, with 442 stars.
Can I simulate one of these boards using the LM555 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.