2 layers245.1 × 160 mm
8-Bit CPU 32k
slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.
139 parts326
Boards using the 74HC32D
149 boardsBoards in 100 GitHub repositories, designed in KiCad, that use the 74HC32D by Nexperia (-40℃~+125℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 6ns@6V,50pF 74HC Series OR Gate SOIC-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the 74HC32D’s symbol, footprint and pinout are on its own page.
- 4 layers100 × 123 mm
Duet2
Duet3D/Duet-2-Hardware
The KiCAD source for the Duet 3d printer controller see www.duet3d.com
356 parts258 - 2 layers191.8 × 121.3 mm
8-Bit CPU 32k
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
109 parts184 - 4 layers100 × 100 mm
- 2 layers306.1 × 130.2 mm
8-Bit CPU 32k
slu4coder/Minimal-64-Home-Computer
Legacy: Full TTL-only home computer with VGA and PS/2 and twice the processing power of a Commodore 64
132 parts94 - 4 layers69 × 74 mm
- 2 layers216 × 150 mm
Motherboard-101
artemisamsx/artemisa
Schematics, PCB designs and HDL simulations to build a 8-bits MSX computer
124 parts67 - 2 layers208.9 × 170.8 mm
8-Bit CPU 32k
slu4coder/Minimal-UART-Computer-3
Version 3 of my educational DIY TTL computer built around a UART serial interface - now with blinkenlights!
207 parts54 - 2 layers127 × 76.2 mm
- 2 layers177.8 × 130.8 mm
- 2 layers
BreadBin
c0pperdragon/BreadBin
A CPU made of 7400 logic on breadboards - inside a bread bin ;-)
45 parts18 - 2 layers335 × 218.6 mm
- 4 layers100 × 77.5 mm
TRH9000
cristianoag/trh9000
Open Source MSX Graphics Card based on the Yamaha V9990 chip
67 parts14CERN-OHL-S-2.0 - 4 layers100 × 100 mm
- 2 layers178 × 711 mm
- 4 layers65.9 × 52.9 mm
- 2 layers170.2 × 78.7 mm
ROsiM
hkzlab/ROsiM
ROsiM is a ROM simulator/emulator, supporting up to 512k/16bit ROMs
93 parts11GPL-3.0 - 4 layers170 × 130 mm
Z80Atmega128
46nori/Z80Atmega128
Real Z80A system with I/O emulated by AVR(ATmega128)
109 parts9GPL-3.0 - 2 layers100 × 100 mm
- 2 layers100 × 80 mm
Minimax8085ScreenKeypad
skiselev/minimax8085-keypad-vfd
VFD and keypad extension board for the minimax 8085
35 parts8GPL-3.0 - 4 layers65.9 × 52.7 mm
Motor shield
DCC-EX/EX-Hardware
Open Source hardware projects developed by the DCC-EX Team
123 parts7CERN-OHL-W-2.0 - 2 layers
- 6 layers210 × 119 mm
Claculator Keypad
Robert-Mones/Claculator
A reverse Polish notation calculator with added features such as comparisons, branching, and custom recursive operators taken from the Clac project from the 15-122 course at Carnegie Mellon University.
202 parts5 - 4 layers99.3 × 88.6 mm
