

Clock Module
- Size
- 95.9 × 90.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 91
- Pads
- 182
- Tracks, vias
- 231, 55
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Sep 2024
- Updated
- 20 Oct 2025
Overview
Clock Module is an open-source printed circuit board by uddivert, from the uddivert/SAP-U repository on GitHub, published under the MIT licence. It is a 2-layer board of 95.9 × 90.2 mm with 29 parts on 91 nets, routed with 231 tracks and 55 vias.
It is built around the 74LS04PC and 74LS32SC. Its parts include 11 capacitors, 7 resistors, 6 ICs, 1 diode and 1 connector. It belongs with the lEDs and displays boards of this library.
Main components
2Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | .01µF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C3, C4, C6, C7, C9, C10 |
| 6 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2, R3, R4, R6, R7 |
| 3 | LM555xN | Package_DIP:DIP-8_W7.62mm | U4, U5, U6 |
| 2 | 47uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C8, C11 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R5 |
| 1 | 1M | Potentiometer_THT:Potentiometer_Bourns_3266Y_Vertical | POT1 |
| 1 | 1µF | Capacitor_THT:C_Radial_D5.0mm_H11.0mm_P2.00mm | C2 |
| 1 | 47µF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C5 |
| 1 | 74LS04 | MyFootPrints:SN74LS04N | U3 |
| 1 | 74LS08 | MyFootPrints:SN74LS08N | U1 |
| 1 | 74LS32 | MyFootPrints:SN74LS32N | U2 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H4.3mm | Push1 |
| 1 | Switch | MyFootPrints:SW_Slide-Jameco-SS-12E17-G020 | SW1 |
| 1 | ~ | MyFootPrints:PC104-Standard | J1 |
Questions
How big is the Clock Module PCB?
It measures 95.9 × 90.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock Module use?
29 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 Module KiCad files?
From the uddivert/SAP-U repository on GitHub, at the commit this page was made from: the board is Clock_Module/Clock_Module.kicad_pcb and its schematic Arithmetic_Logic_Unit/ALU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock Module 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).
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