2 layers120.6 × 47 mm
2 layers154.3 × 66 mm
Mgrfa
rcapaverde/cuboArquitetura de processador conceitual
- Size
- 154.3 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 61
- Pads
- 282
- Tracks, vias
- 444, 15
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Dec 2025
- Updated
- 24 Aug 2026
Overview
Mgrfa is an open-source printed circuit board by rcapaverde, from the rcapaverde/cubo repository on GitHub. It is a 2-layer board of 154.3 × 66 mm with 50 parts on 61 nets, routed with 444 tracks and 15 vias.
It is built around the 74LS574N and 74HC238D. Its parts include 15 resistors, 15 diodes, 9 capacitors, 9 ICs and 2 connectors.
Main components
2README
README.mdcubo - um processador conceitual
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 |
| 7 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7 |
| 7 | 74LS574 | Package_DIP:DIP-20_W7.62mm | U1, U2, U3, U4, U5, U6, U7 |
| 7 | RD | LED_THT:LED_D5.0mm | D2, D4, D6, D8, D10, D12, D14 |
| 7 | WR | LED_THT:LED_D5.0mm | D3, D5, D7, D9, D11, D13, D15 |
| 2 | 100nF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C8, C9 |
| 1 | 74HC238 | Package_DIP:DIP-16_W7.62mm | U9 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm | U8 |
| 1 | POWER | LED_THT:LED_D5.0mm | D1 |
| 1 | bus_mgrf_1 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J8 |
| 1 | bus_mgrf_2 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J9 |
Questions
How big is the Mgrfa PCB?
It measures 154.3 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mgrfa use?
50 parts, built around the 74LS574N and 74HC238D. 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 Mgrfa KiCad files?
From the rcapaverde/cubo repository on GitHub, at the commit this page was made from: the board is pcb_v2/mgrfa/mgrfa.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mgrfa design in my own project?
Its repository states no licence, so its author keeps all rights: ask rcapaverde before reusing the design.
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