2 layers68.5 × 71.5 mm
2 layers124.5 × 98 mm
Full Adder
mitchell-lng/8-bit-cpu- Size
- 124.5 × 98 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 29
- Pads
- 130
- Tracks, vias
- 373, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Jan 2026
- Updated
- 12 Jan 2026
Overview
Full Adder is an open-source printed circuit board by mitchell-lng, from the mitchell-lng/8-bit-cpu repository on GitHub. It is a 2-layer board of 124.5 × 98 mm with 52 parts on 29 nets, routed with 373 tracks and 0 vias.
Its parts include 30 resistors, 21 transistors and 1 connector.
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 2N2222 | Package_TO_SOT_THT:TO-92S | Q1, Q2, Q3, Q4, Q10, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21 +5 |
| 20 | 10k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R4, R12, R13, R14, R15, R16, R19, R20, R21, R22, R23, R25, R28, R29, R30 +4 |
| 10 | 100k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R8, R10, R11, R17, R18, R24, R26, R27 |
| 1 | Conn_01x07_Pin | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J2 |
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Questions
How big is the Full Adder PCB?
It measures 124.5 × 98 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Full Adder use?
52 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 Full Adder KiCad files?
From the mitchell-lng/8-bit-cpu repository on GitHub, at the commit this page was made from: the board is Full-Adder/Full-Adder.kicad_pcb and its schematic 8-bit-input/8-bit-input.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Full Adder design in my own project?
Its repository states no licence, so its author keeps all rights: ask mitchell-lng before reusing the design.