2 layers61.8 × 73.2 mm
2 layers98.3 × 131.3 mm
SouthPaw
PeterHindes/MathCrowPadIts main three features are: Two knobs to scroll through spreadsheets An oled screen to show guides for the knobs An extra row for parenthisis(), exponent^, factorial!, latex syntax$$ etc.
- Size
- 98.3 × 131.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 73
- Pads
- 577
- Tracks, vias
- 1,820, 169
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 16 Sep 2022
- Updated
- 21 Mar 2025
Overview
SouthPaw is an open-source printed circuit board by PeterHindes, from the PeterHindes/MathCrowPad repository on GitHub. It is a 2-layer board of 98.3 × 131.3 mm with 70 parts on 73 nets, routed with 1,820 tracks and 169 vias.
Its parts include 25 diodes, 22 switches and 1 IC.
README
README.mdMathCrowPad
The MathCrowPad is a numberpad for chemistry, math, and spreadsheets.
Its main three features are:
- Two knobs to scroll through spreadsheets
- An oled screen to show guides for the knobs
- An extra row for parenthisis(), exponent^, factorial!, latex syntax$$ etc.
Feel free to make up to 10 for personal use.
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 25 | DIODE | PeteCB:Diode-dual | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +9 |
| 19 | SW_Push | PeteCB:SW_Cherry_MX_1.00u_PCB_WITH_SK6812MINI-E | SW1, SW2, SW3, SW4, SW5, SW6, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW19, SW21 +3 |
| 10 | MountingHole | PeteCB:m2.5 hole | H2, H3, H4, H5, H6, H7, H8, H9, H10, H11 |
| 5 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1mm | FID1, FID2, FID3, FID4, FID5 |
| 3 | RotaryEncoder_Switch | PeteCB:RotaryEncoder_EC11 | RSW1, RSW2, RSW3 |
| 3 | SW_Push | PeteCB:SW_Cherry_MX_2.00u_PCB_WITH_SK6812MINI-E | SW18, SW20, SW22 |
| 2 | Jumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JPSP2, JPSP3 |
| 1 | Jumper_3_Open | Jumper:SolderJumper-3_P2.0mm_Open_TrianglePad1.0x1.5mm | JPSH1 |
| 1 | KB2040 | PeteCB:KB2040 through hole only (top mount with hotpins 3d model view) | U1 |
| 1 | MountingHole | PeteCB:0.91in 128x32 I2C STEMMA QT standoff only with cutout | H1 |
Questions
How big is the SouthPaw PCB?
It measures 98.3 × 131.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SouthPaw use?
70 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 SouthPaw KiCad files?
From the PeterHindes/MathCrowPad repository on GitHub, at the commit this page was made from: the board is main-pcb/SouthPaw.kicad_pcb and its schematic main-pcb/SouthPaw.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SouthPaw design in my own project?
Its repository states no licence, so its author keeps all rights: ask PeterHindes before reusing the design.
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