New condenser for upright to use LED PCB

This merge request updates the upright condenser to match the new condenser for the inverted microscope. It enables use of either 5mm LED or the circular OpenFlexure LED PCB

From #270 (closed):

This would involve:

• Make the Z position parametric, closing #227 (closed)
• Split the upright condenser into two parts - a part similar to the inverted condenser (but without the mounting) and an "lid" that includes the objective mounting wedge to connect to the Z axis.
• Add in the holes to the "lid" to allow the existing 5mm LED holder to fit there
• Increase the size of the void under the condenser (i.e. at the top of the lid) to allow use of the illumination PCB
• Add a lug to the condenser that enables the existing mounting screws to be used, possibly in the opposite direction (i.e. screwing through clearance holes in the condenser, into tapped holes in the lid/mounting.

---

also required:

• renders for building the illumination
• instructions

closes #270 (closed)
closes #227 (closed)

added 2 commits

• 40a471ea - renders of upright illumination assembly
• fe26f2ab - render.py for upright condenser

Compare with previous version

added 2 commits

• 9f31901a - code clean
• e7b2dca1 - Upright illumination renders and instructions

Compare with previous version

added 1 commit

• a205599e - upright illumination renders and instructions

Compare with previous version

marked the checklist item renders for building the illumination as completed

marked the checklist item instructions as completed

This approach seems to work.

• print the parts to check fit and function - particularly the mounting height.

added 3 commits

• 6f55e6e9 - revert extra space in illumination.md
• 29ca9ce1 - remove ambiguity in illumination render
• a6e449aa - remove unused code - upright illumination

Compare with previous version

added 1 commit

• 7df6f186 - remove ambiguity in renders upright illumination

Compare with previous version

added 1 commit

• a91b7485 - remove svg annotation ambiguity

Compare with previous version

added 1 commit

• a17dbea4 - correct upright condenser SVG

Compare with previous version

mentioned in merge request !315 (merged)

Printed and checked. The condenser is a little too high (2mm)

added 1 commit

• 2f9f76da - Adjust upright condenser z-position

Compare with previous version

added 16 commits

• 2f9f76da...ce8d98c6 - 15 commits from branch master
• af5dc89e - Merge branch 'master' into 'PCB_condenser_for_upright'

Compare with previous version

• Check code quality against OFEP standards.
• Correct platform height formula. condenser_lens_assembly_z + ondenser_lens_assembly_pedestal_height() + 7 (22+5.5+ 7 for focus)

Comment from our call today

added 2 commits

• 7e92ca15 - Correct upright condenser platform height
• 5d4d1b31 - spelling

Compare with previous version

added 7 commits

• 5d4d1b31...9aeb0e01 - 6 commits from branch master
• fd0b50ca - Merge remote-tracking branch 'origin/master' into PCB_condenser_for_upright

Compare with previous version

added 1 commit

• 0311e158 - comment undercut module not yet in branch

Compare with previous version