2 open source boards using the R65C51
Real designs built with the R65C51, 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.
6309-Unleashed
FredericSegard
252.7 × 106.7 mm95 parts2LNo license3
BE6502
89Mods
139.2 × 112.3 mm60 parts4LMIT3
The R65C51 in open source designs
The gallery holds 2 open source boards using the R65C51 from 2 GitHub repositories; a typical one measures about 196 × 109.5 mm and carries around 78 components.
50% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is 6309-Unleashed by FredericSegard.
Parts used alongside the R65C51
R65C51: common questions
Where can I find a R65C51 reference design?
Each of the 2 boards on this page is a real design using the R65C51. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the R65C51?
The median is 196 × 109.5 mm, and 50% are two-layer designs.
What is the most popular open source board using the R65C51?
By GitHub stars, 6309-Unleashed by FredericSegard, with 3 stars.
Can I simulate one of these boards using the R65C51 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.