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 layers90 × 50 mm
Clock
Swoking/CPU-Clock- Size
- 90 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 46
- Pads
- 119
- Tracks, vias
- 269, 19
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 31 May 2024
- Updated
- 15 Jun 2024
Overview
Clock is an open-source printed circuit board by Swoking, from the Swoking/CPU-Clock repository on GitHub. It is a 2-layer board of 90 × 50 mm with 28 parts on 46 nets, routed with 269 tracks and 19 vias.
It is built around the 74LS04PC and 74LS32SC. Its parts include 10 resistors, 6 capacitors, 6 ICs, 3 diodes and 2 switches. It belongs with the lEDs and displays boards of this library.
Main components
2Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4, R6, R7, R9 |
| 3 | 220 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R10 |
| 3 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D2, D3 |
| 3 | ~ | DIP Socket:DIP-8_W7.62mm_Socket_LongPads | U1, U2, U6 |
| 2 | 0.01u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C5 |
| 1 | 0-1M | Potentiometer_THT:Potentiometer_Vishay_248GJ-249GJ_Single_Vertical | R8 |
| 1 | 0.01u | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | C2 |
| 1 | 0.1u | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | C3 |
| 1 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 1M | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 74LS04 | DIP Socket:DIP-14_W7.62mm_LongPads | U4 |
| 1 | 74LS08 | DIP Socket:DIP-14_W7.62mm_LongPads | U5 |
| 1 | 74LS32 | DIP Socket:DIP-14_W7.62mm_LongPads | U3 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | SW_Push | Button_Switch_THT:SW_Tactile_Straight_KSL0Axx1LFTR | SW1 |
| 1 | SW_Push_SPDT | Button_Switch_THT:SW_Push_2P2T_Toggle_CK_PVA2xxH1xxxxxxV2 | SW2 |
Questions
How big is the Clock PCB?
It measures 90 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
28 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 Swoking/CPU-Clock repository on GitHub, at the commit this page was made from: the board is clock.kicad_pcb and its schematic base_timer.kicad_sch. 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 Swoking before reusing the design.
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