2 layers91.2 × 42.2 mm
Chal base
DownUnderCTF/Challenges_2024_Public
Files + Solutions for DownUnderCTF 2024 Challenges
47 parts116
4 layers149.9 × 110 mm
Files + Solutions for DownUnderCTF 2024 Challenges
- Size
- 149.9 × 110 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 104
- Pads
- 476
- Tracks, vias
- 2,062, 57
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Jul 2024
- Updated
- 9 Jul 2024
Overview
Sch is an open-source printed circuit board by DownUnderCTF, from the DownUnderCTF/Challenges_2024_Public repository on GitHub. It is a 4-layer board of 149.9 × 110 mm with 47 parts on 104 nets, routed with 2,062 tracks and 57 vias.
It is built around the 74LS00SC, 74LS02PC and 74LS04PC, with the 74LS86 among its other parts. Its parts include 30 ICs, 14 resistors, 2 switches and 1 diode.
Main components
4
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS86
DIP-14-20℃~+75℃ 10mA 2.7V 23ns@5V,15pF 2V 400mV 400uA 5V 74LS 800mV 8mA XOR Gate DIP-14 Logic Gates ROHSHITLogic Gates
README
hardware/i-see/src/README.mdAssembly
- Flash EEPROM with
eeprom.bin(256 bytes). - Solder 'Write Protect' Jumper
Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 74LS40 | Package_DIP:DIP-14_W7.62mm | U003, U004, U006, U009, U011, U013, U014, U016, U017, U019, U020, U021, U023, U026, U030 |
| 14 | R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 |
| 4 | 74LS00 | Package_DIP:DIP-14_W7.62mm | U005, U008, U012, U025 |
| 4 | 74LS02 | Package_DIP:DIP-14_W7.62mm | U002, U007, U018, U027 |
| 3 | 74LS08 | Package_DIP:DIP-14_W7.62mm | U010, U015, U022 |
| 2 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U001, U028 |
| 2 | 74LS86 | Package_DIP:DIP-14_W7.62mm | U024, U029 |
| 1 | LED_D5.0mm_Horizontal_O3.81mm_Z15.0mm | LED_THT:LED_D5.0mm_Horizontal_O3.81mm_Z15.0mm | D1 |
| 1 | SW_DIP_SPSTx05_Slide_9.78x14.88mm_W7.62mm_P2.54mm | Button_Switch_THT:SW_DIP_SPSTx05_Slide_9.78x14.88mm_W7.62mm_P2.54mm | SW2 |
| 1 | SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | Button_Switch_THT:SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1 |
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Questions
How big is the Sch PCB?
It measures 149.9 × 110 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Sch use?
47 parts, built around the 74LS00SC, 74LS02PC, 74LS04PC and 74LS86. 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 Sch KiCad files?
From the DownUnderCTF/Challenges_2024_Public repository on GitHub, at the commit this page was made from: the board is hardware/sirkit/src/sch/sch.kicad_pcb and its schematic hardware/birdloader/src/chal-base.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sch design in my own project?
Its repository states no licence, so its author keeps all rights: ask DownUnderCTF before reusing the design.