3 open source boards using the KY-040
Real designs built with the KY-040, 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.
AVR/ArduinoWanptek encoder
igorzab-stud
56 × 51 mm7 parts4LMIT3
STM32Walky Talky
zmuhammad07
57.1 × 59.6 mm45 parts2LMIT1
ESP32GummyPad
CloudsAreCloudy
85 × 99 mm46 parts2LNo license0
The KY-040 in open source designs
The gallery holds 3 open source boards using the KY-040 from 3 GitHub repositories; a typical one measures about 57.1 × 59.6 mm and carries around 45 components.
67% are two-layer designs, the rest use four layers or more, and 67% carry an open source license.
The most starred is Wanptek encoder by igorzab-stud.
Microcontrollers on boards using the KY-040
What boards using the KY-040 are built for
KY-040: common questions
Where can I find a KY-040 reference design?
Each of the 3 boards on this page is a real design using the KY-040. 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 KY-040 use?
Most are built on AVR/Arduino (1), ESP32 (1) and STM32 (1).
How big is a typical board using the KY-040?
The median is 57.1 × 59.6 mm, and 67% are two-layer designs.
What is the most popular open source board using the KY-040?
By GitHub stars, Wanptek encoder by igorzab-stud, with 3 stars.
Can I simulate one of these boards using the KY-040 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.