2 layers100 × 100 mm
2 layers100 × 100 mm
Led clock
skiselev/74xx_clock574xx ICs Based Digital Clock
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 158
- Pads
- 494
- Tracks, vias
- 1,447, 33
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 26 Feb 2019
- Updated
- 26 Feb 2019
Overview
Led clock is an open-source printed circuit board by skiselev, from the skiselev/74xx_clock repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 100 × 100 mm with 71 parts on 158 nets, routed with 1,447 tracks and 33 vias.
It is built around the 74LS00SC and 74HCT4060D. Its parts include 19 capacitors, 16 ICs, 11 resistors, 4 diodes and 3 switches. It belongs with the lEDs and displays boards of this library.
Main components
2Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100nF | Cap_Cer_762 | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16 |
| 6 | 470 | IC_DIP14_300 | RP1, RP2, RP3, RP4, RP5, RP6 |
| 6 | 74LS47 | IC_DIP16_300 | U5, U6, U7, U8, U9, U10 |
| 6 | 74LS90 | IC_DIP14_300 | U11, U12, U13, U14, U15, U16 |
| 6 | MAN1A | Display_LED7_DIP14_300 | DIS1, DIS2, DIS3, DIS4, DIS5, DIS6 |
| 5 | 4.7k | Res_762 | R1, R2, R3, R4, R5 |
| 4 | 470 | Res_762 | R8, R9, R10, R11 |
| 4 | CONN_1 | Hole_3mm | HOLE1, HOLE2, HOLE3, HOLE4 |
| 4 | LED | LED_5mm | D1, D2, D3, D4 |
| 3 | 74LS00 | IC_DIP14_300 | U2, U3, U4 |
| 1 | 100uF | Cap_Elec_Radial_5mm | C17 |
| 1 | 12pF | Cap_Cer_508 | C18 |
| 1 | 15M | Res_762 | R7 |
| 1 | 32768Hz | Crystal_32K_Horiz | Y1 |
| 1 | 330k | Res_762 | R6 |
| 1 | 5-30pF | CV3-30PF | C19 |
| 1 | 5V | Conn_Power_Jack_Circular_Pads | P1 |
| 1 | 74HCT4060 | IC_DIP16_300 | U1 |
| 1 | HOURS | Switch_SPDP_D2F | SW3 |
| 1 | MINUTES | Switch_SPDP_D2F | SW2 |
| 1 | SECONDS | Switch_SPDP_D2F | SW1 |
Questions
How big is the Led clock PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Led clock use?
71 parts, built around the 74LS00SC and 74HCT4060D. 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 Led clock KiCad files?
From the skiselev/74xx_clock repository on GitHub, at the commit this page was made from: the board is KiCad/led_clock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Led clock design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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