14 open source boards using the NE555
Real designs built with the NE555, 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.
STM32USB-C-Screen-Adapter
Jana-Marie
40 × 20.8 mm60 parts4LGPL-3.068
Blinker-Fuild
CRG-Glen
35.3 × 83.5 mm147 parts4LCERN-OHL-P-2.05
ESP32Moskill
telagod
30 × 100 mm90 parts2LNo license2- schematic only · 24 partsAVR/Arduino
Perfboard studio
medinstech
24 partsApache-2.01 - schematic only · 5 parts
Schematic reconstruction
eehubio
5 partsNo license0 
USB-C-Screen-Adapter-LDR6023SS
31 × 34.4 mm40 parts2LGPL-3.068
SMT-Theremin v2
KnoxMakers
81.3 × 50.8 mm42 parts2LNo license3
Led chaser SMD
tmjnijssen
24 × 35 mm25 parts2LCERN-OHL-P-2.03
ESP32Moskill backup
30 × 100 mm90 parts2LNo license2
Мигалка на NE555
Makarych12
40 × 30 mm8 parts2LNo license0
OtterScreen
44.8 × 31.4 mm31 parts2LGPL-3.068
LED chaser (THT version)
37.5 × 50 mm25 parts2LCERN-OHL-P-2.03
ESP32Moskill routed
30 × 100 mm90 parts2LNo license2
ESP32IMD TSMS latch logic v2
HKUST-Red-Bird-Racing-EVRT
100 × 100 mm72 parts2LNo license3
The NE555 in open source designs
The gallery holds 14 open source boards using the NE555 from 9 GitHub repositories; a typical one measures about 36.4 × 50.4 mm and carries around 41 components.
83% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is USB-C-Screen-Adapter by Jana-Marie.
Microcontrollers on boards using the NE555
What boards using the NE555 are built for
NE555: common questions
Where can I find a NE555 reference design?
Each of the 14 boards on this page is a real design using the NE555. 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 NE555 use?
Most are built on ESP32 (4), AVR/Arduino (1) and STM32 (1).
How big is a typical board using the NE555?
The median is 36.4 × 50.4 mm, and 83% are two-layer designs.
What is the most popular open source board using the NE555?
By GitHub stars, USB-C-Screen-Adapter by Jana-Marie, with 68 stars.
Can I simulate one of these boards using the NE555 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.