9 open source boards using the MC6850
Real designs built with the MC6850, 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.
- schematic only · 84 parts
Nanocomp6809
breadboardinglabs
84 partsApache-2.024 
Fennec6800
ChartreuseK
218 × 131.9 mm113 parts2LBSD-3-Clause20
SoundX
SukkoPera
60.8 × 100 mm44 parts2LNo license8
PICSbc6802
ryu10
98.3 × 75.6 mm29 parts2LNo license6
MUTIF09 Single Board Computer
ja1umi
155 × 114 mm68 parts2LMIT10
MicroKit09Serial
electrickery
62.2 × 49.5 mm17 parts2LNo license1
8 16 computer 2 serial card
halfburnttoast
48 × 94 mm14 parts2LNo license21
MemoryAndPeripherals
daveho
150 × 90 mm28 partsNo license19
RC6802 Serial Chicken
tebl
99.1 × 45.7 mm17 parts2LCERN-OHL-1.26
The MC6850 in open source designs
The gallery holds 9 open source boards using the MC6850 from 9 GitHub repositories; a typical one measures about 98.7 × 92 mm and carries around 29 components.
100% are two-layer designs, the rest use four layers or more, and 44% carry an open source license.
The most starred is Nanocomp6809 by breadboardinglabs.
Microcontrollers on boards using the MC6850
What boards using the MC6850 are built for
MC6850: common questions
Where can I find a MC6850 reference design?
Each of the 9 boards on this page is a real design using the MC6850. 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 MC6850?
The 74LS04, 74LS138, 74HCT74, 74LS00 and 74LS245 appear in the most repositories here.
Which microcontrollers do boards using the MC6850 use?
Most are built on PIC (1).
How big is a typical board using the MC6850?
The median is 98.7 × 92 mm, and 100% are two-layer designs.
What is the most popular open source board using the MC6850?
By GitHub stars, Nanocomp6809 by breadboardinglabs, with 24 stars.
Can I simulate one of these boards using the MC6850 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.