2 layers90.2 × 99.1 mm
Control logic
codemonkey76/DIY-8-Bit-Computer
DIY 8-Bit Computer, based on the design by Ben Eater
94 parts
2 layers72.4 × 63.5 mm
DIY 8-Bit Computer, based on the design by Ben Eater
- Size
- 72.4 × 63.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 37
- Pads
- 131
- Tracks, vias
- 260, 12
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Aug 2019
- Updated
- 25 Aug 2019
Overview
Clock is an open-source printed circuit board by codemonkey76, from the codemonkey76/DIY-8-Bit-Computer repository on GitHub. It is a 2-layer board of 72.4 × 63.5 mm with 39 parts on 37 nets, routed with 260 tracks and 12 vias.
It is built around the 74LS04PC and 74LS32SC. Its parts include 9 resistors, 7 capacitors, 6 ICs, 3 diodes and 2 connectors. It belongs with the retro computing and games and lEDs and displays boards of this library.
Main components
2README
README.mdDIY-8-Bit-Computer
Based off schematics and design of breadboard computer by Ben Eater, available in kit form at: https://eater.net/8bit/kits
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R3, R5, R8, R9 |
| 4 | 10nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C3, C4, C7 |
| 3 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C2, C5, C6 |
| 3 | 220R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R4, R7 |
| 3 | LM555 | Package_DIP:DIP-8_W7.62mm_Socket | U2, U5, U6 |
| 3 | YELLOW | LED_THT:LED_D5.0mm | D1, D2, D3 |
| 1 | +5V | TestPoint:TestPoint_Pad_1.5x1.5mm | TP4 |
| 1 | 1M | Potentiometer_THT:Potentiometer_Bourns_3266Y_Vertical | RV1 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R6 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm_Socket | U1 |
| 1 | 74LS08 | Package_DIP:DIP-14_W7.62mm_Socket | U3 |
| 1 | 74LS32 | Package_DIP:DIP-14_W7.62mm_Socket | U4 |
| 1 | CLK | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | GND | TestPoint:TestPoint_Pad_1.5x1.5mm | TP2 |
| 1 | HLT | TestPoint:TestPoint_Pad_1.5x1.5mm | TP5 |
| 1 | Power | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1 |
| 1 | SW_DPDT_x2 | Button_Switch_THT:SW_PUSH_E-Switch_FS5700DP_DPDT | SW2 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | Signal | Connector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J2 |
| 1 | ~CLK~ | TestPoint:TestPoint_Pad_1.5x1.5mm | TP3 |
The 35 most common of 39 parts.
Questions
How big is the Clock PCB?
It measures 72.4 × 63.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
39 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 codemonkey76/DIY-8-Bit-Computer repository on GitHub, at the commit this page was made from: the board is 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 states no licence, so its author keeps all rights: ask codemonkey76 before reusing the design.
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