2 open source boards using the W65C816S
Real designs built with the W65C816S, 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/ArduinoOtterX
RetroRemake
170.1 × 170.1 mm168 parts4LCERN-OHL-W-2.040
65816-computer
mike42
169.7 × 99.8 mm92 parts4LNo license34
The W65C816S in open source designs
The gallery holds 2 open source boards using the W65C816S from 2 GitHub repositories; a typical one measures about 169.9 × 135 mm and carries around 130 components.
100% use four copper layers or more, and 50% carry an open source license.
The most starred is OtterX by RetroRemake.
Parts used alongside the W65C816S
Microcontrollers on boards using the W65C816S
What boards using the W65C816S are built for
W65C816S: common questions
Where can I find a W65C816S reference design?
Each of the 2 boards on this page is a real design using the W65C816S. 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 W65C816S use?
Most are built on AVR/Arduino (1).
How big is a typical board using the W65C816S?
The median is 169.9 × 135 mm, and 0% are two-layer designs.
What is the most popular open source board using the W65C816S?
By GitHub stars, OtterX by RetroRemake, with 40 stars.
Can I simulate one of these boards using the W65C816S 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.