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the 3d printed case is good, but the ipad on its own is a lousy computer. i want it around for logic pro and drawing, but otherwise i want it to be a linux machine.

options i have explored are:

  1. remove the ipad, take a macbook screen & logic board and design a noisedeck around them.

    • this gets me a "real" computer, but is quite difficult to pull off
      • the hardest part is always
    • no more ipad, which means it can't be used for drawing/reading/tablet things

  2. use the ipad as a remote desktop/vnc display for some SBC

    • battery management is annoying, would have to manage the SBC and ipad battery levels
    • rootfs encryption gets funny when a vnc server is required to get display
      • could work around this with ssh decryption, or even stick a light vnc server in the initramfs?
      • or just do it by feel & have ssh available for debug?
    • user login also gets funny, but i could also either do this by feel/ssh for debug or just auto start sway
    • create a headless display in the sway config with the ipad res, run swaymsg create_output
    • run wayvnc like wayvnc 0.0.0.0 --render-cursor --disable-input --max-fps=60 --output=HEADLESS-1
    • use manual local ethernet connection between the two

  3. use the ipad as a display via an HDMI capture card!

    • use something like orion (by lux) (other options available)
    • this limits the ipad to be just a display, uses standard display tech! no special software on the SBC required
    • need to be aware of input lag (hopefully minimal?)

Battery

PLAN:

  • 3x 18650s - ordered

  • need a 3s BMS

  • need a way to get 12v to the BMS

  • want to be able to plug any usbc charger in, and be able to charge quickly

  • so we need a bidirectional buck/boost usbc that outputs 12v

  • so the schematic is cells --> BMS <----> ip2368 | controller

  • can we fit an IP2368 board in the palmrest?

    • yea, i think so?

  • could use something like this

  • battery case

    • chamfers

    • case screw holes

    • bottom case

    • where to run battery wires?

      • could maybe run them through the midcase wall/bottom in a trench depending on the width?
      • could run them over the btrfld with a connector so the btrfld is removable?
        • near the btrfld hinge perhaps?
          • need to stick a connector either in the battery pack, or in the noisedeck palmrest so we can remove the btrfld
            • ~35mm in
            • 4.75 from bottom
            • 10.2 wide 5.8 tall
        • the wires are ~3mm diameter
        • the connectors are 5.2x10.2 mm

    • longer hinge screws to connect battery pack to laptop

Cooling