Petkn
About the Petkn PCB
Petkn is an open source PCB design by sjgray, published on GitHub. It is a 2-layer board measuring 386.1 × 99.6 mm, with 83 components from 82 distinct parts.
By type, the board carries 76 switches and 7 connectors.
It belongs with the keyboards and retro computing designs in this gallery.
From the project
Replacement and enhanced keyboards for Commodore machines
CBM MX Keyboards Project Steve J. Gray ========================
This is a project to create replacement keyboards for CBM Machines using standard MX keyswitches. The first goal is to create direct replacements that fit standard CBM cases (if possible).
Keyboards are identified by a string in the following format:
where: KB is the keyboard name Vn is the version#. This is a unique design/layout of a specific keyboard. Rn is the revision#. Generally updates to a specific keyboard version.
Petkn bill of materials (BOM)
83 components, 82 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Conn_01x20 | PinHeader_1x20_P2.54mm_Vertical | J1, J4 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | LINK3 | PinHeader_2x02_P2.54mm_Vertical | J3 |
| 1 | SPACE1 | PinHeader_2x02_P2.54mm_Vertical | J5 |
| 1 | SPACE2 | PinHeader_2x02_P2.54mm_Vertical | J6 |
| 1 | LINK67 | PinHeader_2x02_P2.54mm_Vertical | J67 |
| 1 | KP "=" | SW_Cherry_MX_1.00u_PCB | SW1 |
| 1 | KP "." | SW_Cherry_MX_1.00u_PCB | SW2 |
| 1 | NC ($10) | SW_Cherry_MX1A_1.25u_PCB | SW3 |
| 1 | STOP | SW_Cherry_MX_1.00u_PCB | SW4 |
| 1 | "<" | SW_Cherry_MX_1.00u_PCB | SW5 |
| 1 | SPACE | SW_Cherry_MX1A_6.25u_PCB | SW6 |
| 1 | "[" | SW_Cherry_MX_1.00u_PCB | SW7 |
| 1 | OFF/RVS | SW_Cherry_MX1A_1.50u_PCB | SW8 |
| 1 | KP "-" | SW_Cherry_MX_1.00u_PCB | SW9 |
| 1 | KP "0" | SW_Cherry_MX_1.00u_PCB | SW10 |
| 1 | R SHIFT | SW_Cherry_MX_2.00u_PCB | SW11 |
| 1 | ">" | SW_Cherry_MX_1.00u_PCB | SW12 |
| 1 | "]" | SW_Cherry_MX_1.00u_PCB | SW14 |
| 1 | "@" | SW_Cherry_MX_1.00u_PCB | SW15 |
Show 62 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L SHIFT | SW_Cherry_MX_2.00u_PCB | SW16 |
| 1 | KP "+" | SW_Cherry_MX_1.00u_PCB | SW17 |
| 1 | KP "2" | SW_Cherry_MX_1.00u_PCB | SW18 |
| 1 | "?" | SW_Cherry_MX_1.00u_PCB | SW20 |
| 1 | "," | SW_Cherry_MX_1.00u_PCB | SW21 |
| 1 | "N" | SW_Cherry_MX_1.00u_PCB | SW22 |
| 1 | "V" | SW_Cherry_MX_1.00u_PCB | SW23 |
| 1 | "X" | SW_Cherry_MX_1.00u_PCB | SW24 |
| 1 | KP "3" | SW_Cherry_MX_1.00u_PCB | SW25 |
| 1 | KP "1" | SW_Cherry_MX_1.00u_PCB | SW26 |
| 1 | RETURN | SW_Cherry_MX1A_1.50u_PCB | SW27 |
| 1 | ";" | SW_Cherry_MX_1.00u_PCB | SW28 |
| 1 | "M" | SW_Cherry_MX_1.00u_PCB | SW29 |
| 1 | "B" | SW_Cherry_MX_1.00u_PCB | SW30 |
| 1 | "C" | SW_Cherry_MX_1.00u_PCB | SW31 |
| 1 | "Z" | SW_Cherry_MX_1.00u_PCB | SW32 |
| 1 | KP "*" | SW_Cherry_MX_1.00u_PCB | SW33 |
| 1 | KP "5" | SW_Cherry_MX_1.00u_PCB | SW34 |
| 1 | ":" | SW_Cherry_MX_1.00u_PCB | SW36 |
| 1 | "K" | SW_Cherry_MX_1.00u_PCB | SW37 |
| 1 | "H" | SW_Cherry_MX_1.00u_PCB | SW38 |
| 1 | "F" | SW_Cherry_MX_1.00u_PCB | SW39 |
| 1 | "S" | SW_Cherry_MX_1.00u_PCB | SW40 |
| 1 | KP "6" | SW_Cherry_MX_1.00u_PCB | SW41 |
| 1 | KP "4" | SW_Cherry_MX_1.00u_PCB | SW42 |
| 1 | "L" | SW_Cherry_MX_1.00u_PCB | SW44 |
| 1 | "J" | SW_Cherry_MX_1.00u_PCB | SW45 |
| 1 | "G" | SW_Cherry_MX_1.00u_PCB | SW46 |
| 1 | "D" | SW_Cherry_MX_1.00u_PCB | SW47 |
| 1 | "A" | SW_Cherry_MX_1.00u_PCB | SW48 |
| 1 | KP "/" | SW_Cherry_MX_1.00u_PCB | SW49 |
| 1 | KP "8" | SW_Cherry_MX_1.00u_PCB | SW50 |
| 1 | "P" | SW_Cherry_MX_1.00u_PCB | SW52 |
| 1 | "I" | SW_Cherry_MX_1.00u_PCB | SW53 |
| 1 | "Y" | SW_Cherry_MX_1.00u_PCB | SW54 |
| 1 | "R" | SW_Cherry_MX_1.00u_PCB | SW55 |
| 1 | "W" | SW_Cherry_MX_1.00u_PCB | SW56 |
| 1 | KP "9" | SW_Cherry_MX_1.00u_PCB | SW57 |
| 1 | KP "7" | SW_Cherry_MX_1.00u_PCB | SW58 |
| 1 | U ARROW | SW_Cherry_MX_1.00u_PCB | SW59 |
| 1 | "O" | SW_Cherry_MX_1.00u_PCB | SW60 |
| 1 | "U" | SW_Cherry_MX_1.00u_PCB | SW61 |
| 1 | "T" | SW_Cherry_MX_1.00u_PCB | SW62 |
| 1 | "E" | SW_Cherry_MX_1.00u_PCB | SW63 |
| 1 | "Q" | SW_Cherry_MX_1.00u_PCB | SW64 |
| 1 | INS/DEL | SW_Cherry_MX_1.00u_PCB | SW65 |
| 1 | UP/DOWN | SW_Cherry_MX_1.00u_PCB | SW66 |
| 1 | NC ($0A) | SW_Cherry_MX_1.50u_PCB | SW67 |
| 1 | ")" | SW_Cherry_MX_1.00u_PCB | SW68 |
| 1 | "\" | SW_Cherry_MX_1.00u_PCB | SW69 |
| 1 | "'" | SW_Cherry_MX_1.00u_PCB | SW70 |
| 1 | "$" | SW_Cherry_MX_1.00u_PCB | SW71 |
| 1 | QUOTE | SW_Cherry_MX_1.00u_PCB | SW72 |
| 1 | LEFT/RIGHT | SW_Cherry_MX_1.00u_PCB | SW73 |
| 1 | CLR/HOME | SW_Cherry_MX_1.00u_PCB | SW74 |
| 1 | B ARROW | SW_Cherry_MX_1.00u_PCB | SW75 |
| 1 | "(" | SW_Cherry_MX_1.00u_PCB | SW76 |
| 1 | "&" | SW_Cherry_MX_1.00u_PCB | SW77 |
| 1 | "%" | SW_Cherry_MX_1.00u_PCB | SW78 |
| 1 | "#" | SW_Cherry_MX_1.00u_PCB | SW79 |
| 1 | "!" | SW_Cherry_MX_1.00u_PCB | SW80 |
| 1 | S LOCK | SW_Cherry_MX1A_1.50u_PCB | SW320 |
Petkn design files
The KiCad project lives in the sjgray/CBM-MX-Keyboards repository on GitHub; these links point at the commit this page was built from.
Petkn: common questions
How big is the Petkn PCB?
The Petkn measures 386.1 × 99.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Petkn?
83 components, from 82 distinct parts. The full bill of materials is listed on this page.
Where can I download the Petkn design files?
From the sjgray/CBM-MX-Keyboards repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Petkn design in my own project?
The repository has no license, so all rights stay with sjgray. Use it as a reference, and ask the author before reusing the design.
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