2 layers46.5 × 37 mm
MPF III Switchable ROM
BrettHallen/MicroProfessor
The Multitech (Acer) MicroProfessor MPF range of computers.
6 parts2
2 layers372 × 149.5 mm
MPF III Keyboard
BrettHallen/MicroProfessor2The Multitech (Acer) MicroProfessor MPF range of computers.
- Size
- 372 × 149.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 101
- Nets
- 193
- Pads
- 475
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Nov 2025
- Updated
- 1 Nov 2026
Overview
MPF III Keyboard is an open-source printed circuit board by BrettHallen, from the BrettHallen/MicroProfessor repository on GitHub. It is a 2-layer board of 372 × 149.5 mm with 101 parts on 193 nets.
Its parts include 75 switches, 2 resistors, 2 diodes and 1 connector. It belongs with the keyboards and input boards of this library.
README
README.mdMicro Professor MPF
The Multitech (Acer) Micro Professor MPF range of computers:
- MPF-I: Z80 trainer with six 7-digit display
- MPF-IA: Z80 trainer with six 7-digit display
- MPF-IB: Z80 trainer with six 7-digit display
- MPF-IP: Z80 trainer with 20-digit VFD and QWERTY keyboard
- MPF-I/88: 8088 trainer with 2x20 LCD
- MPF-II: 6502 Apple ][ clone with built-in keyboard
- MPF-III: 6502 Apple //e clone with separate keyboard
- MPF-PC/500: IBM PC/XT clone on an ISA card
Parts
101| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6 |
| 2 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 1 | ! 1 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW20 |
| 1 | " ' | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW66 |
| 1 | # 3 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW22 |
| 1 | $ 4 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW23 |
| 1 | % 5 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW24 |
| 1 | & 7 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW26 |
| 1 | ( 9 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW28 |
| 1 | ) 0 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW29 |
| 1 | * 8 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW27 |
| 1 | + = | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW31 |
| 1 | : ; | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW65 |
| 1 | < , | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW82 |
| 1 | <-- | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW32 |
| 1 | > . | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW83 |
| 1 | ? / | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW84 |
| 1 | @ 2 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW21 |
| 1 | A | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW56 |
| 1 | ALT | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.25u | SW86 |
| 1 | B | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW79 |
| 1 | BREAK | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW15 |
| 1 | C | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW77 |
| 1 | CAPS LOCK | LED_THT:LED_D5.0mm | D1 |
| 1 | CAPS LOCK | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW88 |
| 1 | CTRL | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW55 |
| 1 | D | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW58 |
| 1 | DEL | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.50u | SW46 |
| 1 | E | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW36 |
| 1 | ESC | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW19 |
| 1 | F | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW59 |
| 1 | F1 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW1 |
| 1 | F10 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW10 |
| 1 | F11 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW11 |
| 1 | F12 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW12 |
| 1 | F2 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW2 |
| 1 | F3 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW3 |
| 1 | F4 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW4 |
| 1 | F5 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW5 |
| 1 | F6 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW6 |
| 1 | F7 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW7 |
| 1 | F8 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW8 |
| 1 | F9 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW9 |
| 1 | G | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW60 |
| 1 | H | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW61 |
| 1 | HALT | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW18 |
| 1 | I | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW41 |
| 1 | J | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW62 |
| 1 | K | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW63 |
| 1 | L | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW64 |
| 1 | LH SHIFT | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.50u | SW73 |
| 1 | M | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW81 |
| 1 | MPF-III Keyboard Socket | Connector_Dsub:DSUB-9_Pins_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J2 |
| 1 | N | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW80 |
| 1 | NP + | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW54 |
| 1 | NP - | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW50 |
| 1 | NP 0 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW89 |
| 1 | NP 1 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW69 |
| 1 | NP 2 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW70 |
| 1 | NP 3 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW71 |
| 1 | NP 4 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW51 |
| 1 | NP 5 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW52 |
| 1 | NP 6 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW53 |
| 1 | NP 7 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW47 |
| 1 | NP 8 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW48 |
| 1 | NP 9 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW49 |
| 1 | NP RETURN | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u_90deg | SW72 |
| 1 | NP dot | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW90 |
| 1 | NUM LOCK | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u | SW17 |
| 1 | NUM LOCK | LED_THT:LED_D5.0mm | D2 |
| 1 | O | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW42 |
| 1 | P | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW43 |
| 1 | PB0 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW13 |
| 1 | PB1 | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW14 |
| 1 | Q | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW34 |
| 1 | R | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW37 |
| 1 | RESET | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW16 |
| 1 | RETURN | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u_90deg | SW68 |
| 1 | RH SHIFT | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.50u | SW85 |
| 1 | S | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW57 |
The 86 most common of 101 parts.
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Questions
How big is the MPF III Keyboard PCB?
It measures 372 × 149.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MPF III Keyboard use?
101 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 MPF III Keyboard KiCad files?
From the BrettHallen/MicroProfessor repository on GitHub, at the commit this page was made from: the board is MPF-III/Keyboard/MPF-III_Keyboard/MPF-III_Keyboard.kicad_pcb and its schematic MPF-III/Keyboard/MPF-III_Keyboard/MPF-III_Keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MPF III Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask BrettHallen before reusing the design.