2 layers237.5 × 102.9 mm
Instruction
jes/scamp-cpu
A homebrew 16-bit CPU with a homebrew Unix-like-ish operating system.
112 parts301Unlicense
2 layers50 × 50 mm
A Modular PCB based 8-Bit CPU study
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 17
- Pads
- 96
- Tracks, vias
- 89, 8
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 Aug 2018
- Updated
- 13 Dec 2018
Overview
Clock is an open-source printed circuit board by mcdonnelldean, from the mcdonnelldean/cee-pee-yu repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 50 mm with 26 parts on 17 nets, routed with 89 tracks and 8 vias.
It is built around the 74LS04PC and 74LS32SC. Its parts include 6 capacitors, 5 connectors, 4 resistors, 4 ICs and 2 diodes. It belongs with the retro computing and games and lEDs and displays boards of this library.
Main components
2README
README.mdCee Pee Yu
Cee Pee Yu is a Modular PCB based 8-Bit CPU Study. It follows Ben Eater's, Build an 8-Bit Computer, reference design as it's basis.
The primary differentiation is the fact that Cee Pee Yu is not built on a series of bread boards, rather, it is composed of a number of custom designed PCB boards. Besides this, there are minor additions and changes to make the project more compatible with PCB Format.
Go to the site: cee-pee-yu.mcddv.me
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C6 |
| 2 | 1K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4 |
| 2 | 330 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | LED | LEDs:LED_D5.0mm | D1, D2 |
| 1 | 0.01uF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C4 |
| 1 | 10uF | Capacitors_THT:CP_Radial_D5.0mm_P2.50mm | C5 |
| 1 | 5v IN | Socket_Strips:Socket_Strip_Straight_1x02_Pitch2.54mm | J3 |
| 1 | 74LS04 | Housings_DIP:DIP-14_W7.62mm_Socket | U1 |
| 1 | 74LS08 | Housings_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | 74LS32 | Housings_DIP:DIP-14_W7.62mm_Socket | U3 |
| 1 | CLK OUT | Socket_Strips:Socket_Strip_Straight_1x02_Pitch2.54mm | J2 |
| 1 | HLT IN | Socket_Strips:Socket_Strip_Straight_1x02_Pitch2.54mm | J1 |
| 1 | LM555 | Housings_DIP:DIP-8_W7.62mm_Socket | U4 |
| 1 | OSC A | Socket_Strips:Socket_Strip_Straight_1x03_Pitch2.54mm | J4 |
| 1 | OSC B | Socket_Strips:Socket_Strip_Straight_1x03_Pitch2.54mm | J5 |
| 1 | SEL SW | Custom_Parts:SW_DPDT_L7mm_P2mm | SW1 |
The 22 most common of 26 parts.
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Questions
How big is the Clock PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
26 parts, built around the 74LS04PC and 74LS32SC. 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 Clock KiCad files?
From the mcdonnelldean/cee-pee-yu repository on GitHub, at the commit this page was made from: the board is kicad/clock/clock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).