Holes do not match PC/104 standard

mawson-rovers / hestia

Hestia is a space-ready heater & temperature measurement system developed by Mawson Rovers in Sydney. Its first mission will demonstrate a novel UTS heatsink design, aboard the Waratah Seed cubesat mission. It is due to launch on a SpaceX rocket in July 2024.

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Holes do not match PC/104 standard #55

Closed mryall-mawson closed 1 year ago

mryall-mawson commented 1 year ago

Identified by CUAVA with the CAD, and then confirmed in KiCad and by a fit test at UTS.

Looks like the holes got moved slightly (up to 0.4mm) early in the design, and we never revalidated it. This has been a problem since at least the v1.1 boards.

We can workaround it for the current versions, but still need to fix the board design and send a new CAD to the team.

(While doing a new CAD, we should also work out how to include the Pico-Lock connector shroud 3D models.)

mryall-mawson commented 1 year ago

PCB design has been fixed. New STEP file can be found in the build artifacts here: https://github.com/mawson-rovers/hestia/actions/runs/5611578622

Now we need to work out how to physically fix some of the existing boards, as we do not have time to manufacture more. Current plan is to make a drill template with H5 and H7 holes for fixing the PCB, and H6 in the new location for drilling. Then we'll drill through a buffer layer on top/bottom to minimise damage to the PCB.