6 open source boards using the 6551
Real designs built with the 6551, 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.
Dragon64
danwerner21
333.2 × 205.9 mm220 parts2LNo license34
FellaPC
agkaminski
284.9 × 96.5 mm107 parts2LCC0-1.02
AVR/Arduino6502 Computer
DomAtTheShack
216.6 × 144 mm74 parts2LNo license0
Backup
333.2 × 205.9 mm218 parts2LNo license34
AVR/Arduino6502 DebugBoard
199.6 × 114.2 mm64 parts2LNo license0
Backup1
333.2 × 205.9 mm218 parts2LNo license34
The 6551 in open source designs
The gallery holds 6 open source boards using the 6551 from 3 GitHub repositories; a typical one measures about 309 × 174.9 mm and carries around 163 components.
100% are two-layer designs, the rest use four layers or more, and 17% carry an open source license.
The most starred is Dragon64 by danwerner21.
Microcontrollers on boards using the 6551
What boards using the 6551 are built for
6551: common questions
Where can I find a 6551 reference design?
Each of the 6 boards on this page is a real design using the 6551. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 6551?
The MAX232, 74HC00 and 74HC166 appear in the most repositories here.
Which microcontrollers do boards using the 6551 use?
Most are built on AVR/Arduino (2).
How big is a typical board using the 6551?
The median is 309 × 174.9 mm, and 100% are two-layer designs.
What is the most popular open source board using the 6551?
By GitHub stars, Dragon64 by danwerner21, with 34 stars.
Can I simulate one of these boards using the 6551 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.