v3.2.2 - Mobo D1 DNP and CAD Tweaks

What's Changed

• The motherboard now has D1 set to DNP (do not populate) for the following reason:
  • D1 allows the 3v3 rail to be powered from USB VBUS. However, the stepper motor drivers are not powered by VBUS.
  • If USB power is applied before main power, the STM32 will boot and send configuration data to the steppers, but the steppers are not powered to receive it. When the stepper drivers are eventually powered, they are incorrectly configured.
  • Removing D1 prevents this problem, and requires barrel jack power for communication to the machine.
• The nozzle rack has been adjusted to be slightly shorter to provide more clearance for the top camera lens.
• Nut pockets have been slightly adjusted to facilitate a better press fit.
• As of v3.2.1 the LumenPnP's CP40 nozzle holder is now an open source part known to Opulo as nozzle-holder that is compatible with the CP40 nozzle standard.
  

CI Improvements

• Update FreeCAD to 0.21.2 by @G-Pereira in #713
• FIx STL artifacts zip inside zip by @G-Pereira in #682

Additional Notes

• This release intentionally skips v3.2.1
  • v3.2.1 was nothing more than the results of #721, so a public release of this version was skipped while we awaited more publically relevant design changes to land.

Full Changelog: v3.2.0...v3.2.2