Design Study on Electronics Enclosure

[A-Ghoul]

• What parts need to fit in the enclosure for bare minimum functionality
  • Need to keep close contact with the electronics team.
• How can we effectively cool parts
  • Separate Design Study on Heat production of parts and the amount of heat we need to reasonably reject
  • Space for fins or standard heat manifolds on hot parts.
  • Plenty of space for airflow
  • How big of and how many fans can we fit in a tube (within reason).
• Assume a 6" tube
  • Hard cap on length: 24"
  • Check the blue robotics site for parts: [LINK], (Link to tube)
    • Using 6" O-Ring seals on each face
    • Using a Clear 1/2" front cap
    • Rear cap 1/4" metal (ideally 304 S.S. but may need to use Aluminum).
• In general work in conjunction with this issue for redesigning the layout for electronics: Redesign of Electronics Within ROV MATE_ROV_Electronics#3
  • Compactness is good, but leaving enough space for heat rejection, reparability, and upgradeability is king.
• Assume that we will have a forward-facing camera in the tube looking through the front acrylic and a downward-facing camera looking through the tube.
• Look at the aqua-squatch_alpha branch for inspiration on the caps
  • Need to include enough holes for all the necessary electronics, tether holes need to be central to the cap and close
    together. Assume all holes are for fitting an M10 passthrough.
    • Tether Power +/- (2)
    • Tether Ethernet (1)
    • Tether Spare (1)
    • Thrusters (8)
    • 30 16-18AWG wires (Minimum number of Passthruss, ~6)
    • USB/Ethernet Devices (4)
    • Sensors (2)
    • Potential expansion (5)
      • If space is limited, these can be unincluded as necessary
  • Front cap will need an additional plate designed that will hook the front of the tube into the frame
  • In general, assume that the backplate/cap will be permanently attached to the frame and the electronics
    • The rest of the tube and front cap should be able to slide off the electronics so that we can work on the electronics in place.
    • Removes the need for as many connectors.
  • We have LOTS of fasteners. Please check team/club inventory first for fasteners (we may have something that will at least work).