FOSDEM box 3.0 – mechanics

[dexterlb]

• Determine what screws to use for affixing the baseplate to the box
  • The currently-used (M3) screws easily come out of the plastic, destroying the "thread" in the process
  • Something like this might be useful but I can't find a hex2 option – maybe we can settle for a hex-head instead? (box disassembly requires a hex-head tool anyway because of the cable tie nuts)
  • Maybe we don't need to use a different type of screw, and can just use the plastic threadlocker with the current screws?
• Design 3D-printable standoffs for the two-hagibis stack
  • Standoff height: 15mm
  • Ideally, there would be a way to leave the standoffs and respective bolts in with just a single hagibis, so that the box can be easily upgraded in the future
• Determine what bolts to use for the two-hagibis stack (is there a M4 hex2 option available anywhere, or do we need to settle with hex2.5?)
  • Bolt length: 20mm
• Determine how to mount the fan bracket
  • what screws, or nuts+bolts to use to mount the fans to the bracket
    • The 15mm bolt with a nut seems like a perfect fit here
  • what bolts to use to mount the bracket to the baseplate
    • Probably the same ones as those that are used for the display mount
• Design new front and back panels
  • Front panel
    • Fix location of front audio jack hole
      • Move it left (towards the XLRs) by 1mm and down by 0.5mm
    • Add fazants
    • Move the XLR labels so that the XLR pin doesn't hide them'
    • Move the USBs hole 0.8mm up and 0.8mm left
  • Back panel
    • Dual-stack hagibis HDMI holes
      • Add a second set of HDMI holes 16.2mm above the current ones
• Determine what cables to order
  • 3.5mm audio jack cable for stripping presenter audio
  • 30 cm MicroHDMI to HDMI for the video output from the radxa
  • USB3 A-A cables: we planned for one short cable and one long cable, but the new boxes require two short cables (for the hagibises) and one long cable (for the passthrough port)