2 layers120.6 × 47 mm
2 layers137.8 × 73.6 mm
Ula8da
rcapaverde/cuboArquitetura de processador conceitual
- Size
- 137.8 × 73.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 139
- Nets
- 84
- Pads
- 402
- Tracks, vias
- 1,036, 38
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Dec 2025
- Updated
- 24 Aug 2026
Overview
Ula8da is an open-source printed circuit board by rcapaverde, from the rcapaverde/cubo repository on GitHub. It is a 2-layer board of 137.8 × 73.6 mm with 139 parts on 84 nets, routed with 1,036 tracks and 38 vias.
It is built around the 74HC238D and 74LS04PC. Its parts include 115 diodes, 11 resistors, 6 capacitors, 6 ICs and 1 connector.
Main components
2README
README.mdcubo - um processador conceitual
Parts
139| Qty | Value | Footprint | References |
|---|---|---|---|
| 112 | 1N4148 | Diode_THT:D_DO-35_SOD27_P3.81mm_Vertical_KathodeUp | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +96 |
| 8 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
| 6 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C2, C3, C4, C5, C6 |
| 4 | 74LS138 | Package_DIP:DIP-16_W7.62mm | U1, U3, U4, U6 |
| 3 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R120, R121, R122 |
| 3 | LED | LED_THT:LED_D5.0mm | D120, D121, D122 |
| 1 | 74HC238 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U5 |
| 1 | addr_decoder | edge_connector:edge-connector-44 | J1 |
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Questions
How big is the Ula8da PCB?
It measures 137.8 × 73.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ula8da use?
139 parts, built around the 74HC238D and 74LS04PC. 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 Ula8da KiCad files?
From the rcapaverde/cubo repository on GitHub, at the commit this page was made from: the board is pcb_v2/ula8da/ula8da.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ula8da design in my own project?
Its repository states no licence, so its author keeps all rights: ask rcapaverde before reusing the design.