2 layers229.6 × 77.2 mm
2 layers310 × 110 mm
8bit adder
Lopfi/8bit-adder2A DIY 8 Bit Adder from single transistors
- Size
- 310 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 348
- Nets
- 189
- Pads
- 832
- Tracks, vias
- 1,168, 4
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 30 Sep 2024
- Updated
- 7 Nov 2024
Overview
8bit adder is an open-source printed circuit board by Lopfi, from the Lopfi/8bit-adder repository on GitHub, published under the MIT licence. It is a 2-layer board of 310 × 110 mm with 348 parts on 189 nets, routed with 1,168 tracks and 4 vias.
Its parts include 243 resistors, 72 transistors, 25 diodes, 6 connectors and 2 switches. It belongs with the retro computing and games boards of this library.
README
README.mdParts
348| Qty | Value | Footprint | References |
|---|---|---|---|
| 144 | 10k | RobinsParts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11, R12, R100, R102, R103, R105, R106, R108, R109, R111, R112, R114, R115, R117, R118, R122 +128 |
| 72 | 1k | RobinsParts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R13, R101, R104, R107, R110, R113, R116, R119, R124, R127, R130, R133, R136, R139, R142 +56 |
| 72 | Q_NPN_BCE | RobinsParts:TO-92L_Inline | Q1, Q2, Q10, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23 +56 |
| 25 | 220 | RobinsParts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R120, R121, R149, R150, R178, R179, R180, R181, R182, R265, R266, R267, R268, R269, R270 +9 |
| 25 | LED | LED_THT:LED_D3.0mm | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D20, D21, D22, D23, D24 +9 |
| 4 | Screw_Terminal_01x01 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | J3, J4, J5, J6 |
| 2 | 5k1 | RobinsParts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R29, R30 |
| 2 | Switches | Button_Switch_THT:SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1, SW2 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Power | robins-parts:CUI_UJC-HP-3-SMT-TR | J1 |
Questions
How big is the 8bit adder PCB?
It measures 310 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 8bit adder use?
348 parts. 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 8bit adder KiCad files?
From the Lopfi/8bit-adder repository on GitHub, at the commit this page was made from: the board is 8bit-adder.kicad_pcb and its schematic 8bit-adder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 8bit adder 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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