4 layers108 × 35.8 mm
SIMM72BL
demik/oldworld
Development ressources for Old World Macintosh (68k and NuBus PPC) and a few related things…
135 parts27CERN-OHL-P-2.0
2 layers301.2 × 91.9 mm
Design68
demik/oldworld27Development ressources for Old World Macintosh (68k and NuBus PPC) and a few related things…
- Size
- 301.2 × 91.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 42
- Pads
- 454
- Tracks, vias
- 788, 29
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 6 May 2020
- Updated
- 21 Aug 2026
Overview
Design68 is an open-source printed circuit board by demik, from the demik/oldworld repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 301.2 × 91.9 mm with 102 parts on 42 nets, routed with 788 tracks and 29 vias.
Its parts include 70 switches, 6 diodes, 4 capacitors, 4 resistors and 2 connectors. It belongs with the retro computing and games boards of this library.
README
EDA/VIA PLCC2DIP/README.mdVIA PLCC2DIP
Simple VIA Adapter to use or test PLCC VIA 6522 on DIP based boards or breakboards
Pins labelled on top of the PCB. Power LED as extra
Building, BOM
- One PLCC-44 Through-hole socket
- Machine pin headers (2x20)
The gerbers files are downloadable here
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 59 | 1u | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW10, SW11, SW12, SW13, SW15, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25 +43 |
| 12 | MountingHole | MountingHole:MountingHole_5.5mm | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12 |
| 4 | 1.25u | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SW45, SW60, SW61, SW62 |
| 4 | LED | LED_THT:LED_D3.0mm | LED1, LED2, LED3, LED4 |
| 3 | 180 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4 |
| 2 | 1.75u | Button_Switch_Keyboard:SW_Cherry_MX_1.75u_PCB | SW31, SW57 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 1 | 1.5u | Button_Switch_Keyboard:SW_Cherry_MX_1.50u_PCB | SW16 |
| 1 | 100nF | Capacitor_THT:C_Axial_L3.8mm_D2.6mm_P10.00mm_Horizontal | C3 |
| 1 | 10uF | Capacitor_THT:CP_Axial_L11.0mm_D5.0mm_P18.00mm_Horizontal | C2 |
| 1 | 2u | Button_Switch_Keyboard:SW_Cherry_MX_2.00u_PCB | SW14 |
| 1 | 4 MHz | Crystal:Resonator_Murata_CSTLSxxxG-3Pin_W8.0mm_H3.0mm | Y1 |
| 1 | 4.7uF | Capacitor_THT:CP_Axial_L11.0mm_D5.0mm_P18.00mm_Horizontal | C1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 6.25u | Button_Switch_Keyboard:SW_Cherry_MX_6.25u_PCB | SW63 |
| 1 | Jumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1 |
| 1 | KS88C0504 DIP Socket | Package_DIP:DIP-40_W15.24mm_Socket | K1 |
| 1 | L shit | Button_Switch_Keyboard:SW_Cherry_MX_ISOEnter_PCB | SW29 |
| 1 | Mini-DIN-4 | 5749181:57491811 | J3 |
| 1 | Wires | Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Horizontal | J4 |
| 1 | locked | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4 |
The 100 most common of 102 parts.
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Questions
How big is the Design68 PCB?
It measures 301.2 × 91.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Design68 use?
102 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Design68 KiCad files?
From the demik/oldworld repository on GitHub, at the commit this page was made from: the board is EDA/Design68/ISO/Design68.kicad_pcb and its schematic EDA/68k-nano+/68000sbc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Design68 design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).