2 layers105 × 105 mm
Neopixel
hackclub/OnBoard
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71 parts915
2 layers225.9 × 125.3 mm
MF50
nearestexit/MF50xwhatsit-compatible capacitive conversion PCB for the IBM M50
- Size
- 225.9 × 125.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 25
- Pads
- 311
- Tracks, vias
- 848, 0
- Pours
- 37
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Nov 2024
- Updated
- 22 Nov 2024
Overview
MF50 is an open-source printed circuit board by nearestexit, from the nearestexit/MF50 repository on GitHub, published under the MIT licence. It is a 2-layer board of 225.9 × 125.3 mm with 71 parts on 25 nets, routed with 848 tracks and 0 vias.
Its parts include 51 switches and 1 connector.
README
README.mdMF50
Capacitive replacement PCB for the IBM M50.
I have tested this in my own M50. I ordered it from JLCPCB with 0.6mm thickness.
It is designed to be used with the SMD Model F Controller: https://deskthority.net/viewtopic.php?t=24597
I used the "standard" version of the controller, and it fit in the bottom case.
You must have some sort of insulation between the bottom of the PCB and the plate. I cut an insulating layer out a sheet of 0.1mm PVC purchased from here: https://www.amazon.com/dp/B095N7TMZH
You MUST ground the backplate to the controller - this is not shown in the image below.
QMK-xwhatsit firmware made by purdeaandrei can be found here: http://35.164.28.200:5000/#/xwhatsit/ibm/f50/universal/LAYOUT
Credits:
- purdeaandrei
- dorkvader
- vivilazuli
- theMK
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | TestPoint | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14, TP15 |
| 1 | 1,1 | tam_cap:SW_CAP_F_R | SW1 |
| 1 | 1,2 | tam_cap:SW_CAP_F_L | SW2 |
| 1 | 1,3 | tam_cap:SW_CAP_F_R | SW3 |
| 1 | 1,4 | tam_cap:SW_CAP_F_R | SW4 |
| 1 | 1,5 | tam_cap:SW_CAP_F_L | SW5 |
| 1 | 1,6 | tam_cap:SW_CAP_F_R | SW6 |
| 1 | 1,7 | tam_cap:SW_CAP_F_L | SW7 |
| 1 | 2,1 | tam_cap:SW_CAP_F_R | SW9 |
| 1 | 2,2 | tam_cap:SW_CAP_F_L | SW10 |
| 1 | 2,3 | tam_cap:SW_CAP_F_R | SW11 |
| 1 | 2,4 | tam_cap:SW_CAP_F_R | SW12 |
| 1 | 2,5 | tam_cap:SW_CAP_F_R | SW13 |
| 1 | 2,6 | tam_cap:SW_CAP_F_L | SW14 |
| 1 | 2,7 | tam_cap:SW_CAP_F_R | SW15 |
| 1 | 2,8 | tam_cap:SW_CAP_F_L | SW16 |
| 1 | 3,1 | tam_cap:SW_CAP_F_R | SW17 |
| 1 | 3,2 | tam_cap:SW_CAP_F_L | SW18 |
| 1 | 3,3 | tam_cap:SW_CAP_F_R | SW19 |
| 1 | 3,4 | tam_cap:SW_CAP_F_R | SW20 |
| 1 | 3,5 | tam_cap:SW_CAP_F_L | SW21 |
| 1 | 3,6 | tam_cap:SW_CAP_F_R | SW22 |
| 1 | 3,7 | tam_cap:SW_CAP_F_L | SW23 |
| 1 | 4,1 | tam_cap:SW_CAP_F_R | SW25 |
| 1 | 4,2 | tam_cap:SW_CAP_F_L | SW26 |
| 1 | 4,3 | tam_cap:SW_CAP_F_R | SW27 |
| 1 | 4,4 | tam_cap:SW_CAP_F_R | SW28 |
| 1 | 4,5 | tam_cap:SW_CAP_F_R | SW29 |
| 1 | 4,6 | tam_cap:SW_CAP_F_L | SW30 |
| 1 | 4,7 | tam_cap:SW_CAP_F_R | SW31 |
| 1 | 4,8 | tam_cap:SW_CAP_F_L | SW32 |
| 1 | 5,1 | tam_cap:SW_CAP_F_L | SW33 |
| 1 | 5,2 | tam_cap:SW_CAP_F_L | SW34 |
| 1 | 5,4 | tam_cap:SW_CAP_F_L | SW36 |
| 1 | 5,5 | tam_cap:SW_CAP_F_L | SW37 |
| 1 | 5,7 | tam_cap:SW_CAP_F_L | SW39 |
| 1 | 6,1 | tam_cap:SW_CAP_F_R | SW41 |
| 1 | 6,2 | tam_cap:SW_CAP_F_L | SW42 |
| 1 | 6,3 | tam_cap:SW_CAP_F_R | SW43 |
| 1 | 6,4 | tam_cap:SW_CAP_F_R | SW44 |
| 1 | 6,5 | tam_cap:SW_CAP_F_L | SW45 |
| 1 | 6,6 | tam_cap:SW_CAP_F_R | SW46 |
| 1 | 6,7 | tam_cap:SW_CAP_F_L | SW47 |
| 1 | 7,1 | tam_cap:SW_CAP_F_R | CAL1 |
| 1 | 7,2 | tam_cap:SW_CAP_F_L | SW49 |
| 1 | 7,3 | tam_cap:SW_CAP_F_R | SW50 |
| 1 | 7,4 | tam_cap:SW_CAP_F_R | SW51 |
| 1 | 7,5 | tam_cap:SW_CAP_F_R | SW52 |
| 1 | 7,6 | tam_cap:SW_CAP_F_L | SW53 |
| 1 | 7,7 | tam_cap:SW_CAP_F_R | SW54 |
| 1 | 7,8 | tam_cap:SW_CAP_F_L | SW55 |
| 1 | 8,2 | tam_cap:CAL_CAP_F | SW57 |
| 1 | 8,6 | tam_cap:CAL_CAP_F | SW61 |
| 1 | CONN_CAP | tam_cap:CONN_CAP_3.96mm | J1 |
| 1 | LOGO | wheelwriter:taylor | G*** |
| 1 | MountingHole | tam_cap:F50_Hole | H3 |
| 1 | XTHole | tam_cap:F50_Hole | H4 |
Questions
How big is the MF50 PCB?
It measures 225.9 × 125.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MF50 use?
71 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 MF50 KiCad files?
From the nearestexit/MF50 repository on GitHub, at the commit this page was made from: the board is MF50.kicad_pcb and its schematic MF50.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MF50 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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