3 open source boards using the ULN2003AD
Real designs built with the ULN2003AD, 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.
ESP32Esp32-aquarium controller
voltlog
122 × 86 mm60 parts2LGPL-3.022
AVR/ArduinoMAGIC Game - Catch the Gamma!
mppmu
208.3 × 129.5 mm159 parts4LGPL-3.00
Hellen1-output
rusefi
28.3 × 43 mm56 parts2LNo license0
The ULN2003AD in open source designs
The gallery holds 3 open source boards using the ULN2003AD from 3 GitHub repositories; a typical one measures about 122 × 86 mm and carries around 60 components.
67% are two-layer designs, the rest use four layers or more, and 67% carry an open source license.
The most starred is Esp32-aquarium controller by voltlog.
Microcontrollers on boards using the ULN2003AD
What boards using the ULN2003AD are built for
ULN2003AD: common questions
Where can I find a ULN2003AD reference design?
Each of the 3 boards on this page is a real design using the ULN2003AD. 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 ULN2003AD use?
Most are built on AVR/Arduino (1) and ESP32 (1).
How big is a typical board using the ULN2003AD?
The median is 122 × 86 mm, and 67% are two-layer designs.
What is the most popular open source board using the ULN2003AD?
By GitHub stars, Esp32-aquarium controller by voltlog, with 22 stars.
Can I simulate one of these boards using the ULN2003AD 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.