2 layers144.1 × 108.1 mm
2 layers149.9 × 99.1 mm
Gate timer
cellularmitosis/gate-timerA beam-interrupt timer with a large 7-segment display.
- Size
- 149.9 × 99.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 77
- Pads
- 227
- Tracks, vias
- 385, 4
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 2 Jul 2022
- Updated
- 10 Jul 2022
Overview
Gate timer is an open-source printed circuit board by cellularmitosis, from the cellularmitosis/gate-timer repository on GitHub, published under the MIT licence. It is a 2-layer board of 149.9 × 99.1 mm with 56 parts on 77 nets, routed with 385 tracks and 4 vias.
It is built around the 74HC595 and ULN2003A. Its parts include 25 resistors, 10 ICs, 4 capacitors and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
kicad/README.mdskel
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 47 | PL_R_AXIAL_0W25_059A | R2, R3, R4, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 +5 |
| 10 | Val** | PL_hole_25_1 | H***, H***, H***, H***, H***, H***, H***, H***, H***, H*** |
| 4 | 0.1uF | PL_CERCAP_15_059B_0805 | C1, C3, C4, C5 |
| 4 | Val** | PL_hole_M3_NPTH | H***, H***, H***, H*** |
| 3 | 120 | PL_R_AXIAL_0W25_059A | R23, R24, R25 |
| 3 | 18101BS | PL_18101BS | IC8, IC9, IC10 |
| 3 | 74HC595 | PL_DIP16 | IC2, IC3, IC4 |
| 3 | ULN2003A | PL_DIP16 | IC5, IC6, IC7 |
| 1 | 10k | PL_R_AXIAL_0W25_059A | R1 |
| 1 | CONN_2X1 | PL_SIL-2 | P2 |
| 1 | CONN_3X1 | PL_SIL-3 | P1 |
| 1 | OSHW-logo_silkscreen-front_8mm | OSHW-logo_silkscreen-front_8mm | G*** |
| 1 | PRO_MICRO | PL_PRO_MICRO | IC1 |
Questions
How big is the Gate timer PCB?
It measures 149.9 × 99.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Gate timer use?
56 parts, built around the 74HC595 and ULN2003A. 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 Gate timer KiCad files?
From the cellularmitosis/gate-timer repository on GitHub, at the commit this page was made from: the board is kicad/gate-timer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gate timer 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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