5 open source boards using the ATtinyxx4
Real designs built with the ATtinyxx4, 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/ArduinoOpenkey cps2
jwestfall69
27.5 × 28.3 mm2 parts2LUnlicense29
AVR/ArduinoOpenkey cps1-dev
108.3 × 94.3 mm21 parts2LUnlicense17
AVR/ArduinoOpenkey kabuki
18.3 × 51.4 mm10 parts2LUnlicense11
AVR/ArduinoOpenkey kabuki cr
18.3 × 51.4 mm8 parts2LUnlicense1
AVR/ArduinoOpenkey cps1
108.3 × 80.5 mm18 parts2LUnlicense17
The ATtinyxx4 in open source designs
The gallery holds 5 open source boards using the ATtinyxx4 from 4 GitHub repositories; a typical one measures about 27.5 × 51.4 mm and carries around 10 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Openkey cps2 by jwestfall69.
Parts used alongside the ATtinyxx4
Microcontrollers on boards using the ATtinyxx4
What boards using the ATtinyxx4 are built for
ATtinyxx4: common questions
Where can I find a ATtinyxx4 reference design?
Each of the 5 boards on this page is a real design using the ATtinyxx4. 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 ATtinyxx4 use?
Most are built on AVR/Arduino (5).
How big is a typical board using the ATtinyxx4?
The median is 27.5 × 51.4 mm, and 100% are two-layer designs.
What is the most popular open source board using the ATtinyxx4?
By GitHub stars, Openkey cps2 by jwestfall69, with 29 stars.
Can I simulate one of these boards using the ATtinyxx4 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.