erin/48ish
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  • v3 2e72f8cbaf

    v3 Stable

    erin released this 2025-11-13 18:03:01 +00:00 | 1 commits to main since this release

    There's now two versions of the board:

    • v3.mbk is fundamentally the same as v2 and uses an 18x17mm spacing between switches, which is good for most keycaps and is based on the footprint of FK's MBK keycaps.
    • v3.cfx is new and uses a square 17x17mm grid for Chosfox's CFX keycaps. v3.cfx is not as wide, and has different mounting hole spacing and power/reset switch positioning as a result of the narrower size. It also does not support unified space, despite having a footprint for a centered spacebar switch, because uhh, a while after ordering these boards I learned that CFX is still intended to be on an 18x17mm grid despite the keycaps themselves being 17x17mm. 2u CFX keycaps are more than 34mm wide and so do not fit on this board. It's greeeeaaaat.

    image

    v3 PCBs are dated 2025-11-05; i got around to the git tagging and such a little late.

    manufacturing files

    MBK (18x17mm) and CFX (17x17mm) production files are both attached.

    gerbers/drills for PCB manufacturing: 48ish_soldered_mbk_out.zip or 48ish_soldered_cfx_out.zip
    pick and place file for PCB bottom side assembly: 48ish_soldered_mbk-bottom-pos.csv or 48ish_soldered_cfx-bottom-pos.csv
    BOM for PCB bottom side assembly: both board variants use the same file, 48ish_soldered_bom.csv

    Ordering instructions and other parts you'll need to turn these files into a completed board are otherwise the same as in v2. Pay close attention to the size of your keycaps and make sure you order the right board variant. MX spacing is not supported by either variant (yet™️). Note that with JLCPCB you'll still need to be careful that all the diodes are facing the right way.

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