Print them flat.
Camera mount: flipped on its top
Base-plate: Flat, with holes facing down
Dome-ring: Flat, with bevel facing up.
Sanding is required
The camera mount needed to be an interference fit. So some sanding will be required at .4mm layer height. You might not need it at a finer resolution.
This was designed by modelling the project box in Fusion 360, then creating prototype pieces that fit inside the box.
There were about 8 prototypes printed at 15% infil and 2 shells. But the final product has 3 shells and 80% infill.
Prototype didn't account for the screw standoffs in the box.
SO I switched to a more robust design platform.
Prototype test fitting ensued. Many, many prototypes.
Initial testing had the camera a little too low. Another revision of the mount was needed. Another semi-circle notch was added to accommodate wiring the POE converter.
It turned out ok though!!!
Dat' dome though....
The first un-tuned photos look great.. can't wait for many more.
Overview and Background
This project was created as a challenge. The request was to reduce the size of a normal wireless allsky camera down to a 5" square box.
It required multiple prototypes and learning Autodesk Fusion 360.
The cost of the hardware is high, but the payoff is a camera that should capture the sky and create timelapses for a long time, with minimal maintenance (cleaning mostly)
I suggest hosting the files on a website accessible to the public, so your students can show their parents/friends the results of their work.
Lesson Plan and Activity
Sorry, I'm not a teacher, I'm not sure how to make this into a lesson plan. I will try though.
Step 0: Introduce the project to the class (not sure how long this project will take in school, it too me 3 days over holiday as an individual without having to explain what I was doing to anyone)
Step 1: Talk about photography in a general overview
Step 2: Talk about space in a general overview
Step 3: Show examples of astro-photography, available from NASA and other sites
Step 4: Talk about computer aided design and manufacturing in a general overview
Step 5: Introduce Fusion 360 and do some small projects
Step 6: Print some of those projects
Step 7: Introduce the software, be sure to explain that it is open-source, and why it is important for projects to be released to the public (so we can move technology forward without having to pay excessive fees)
Step 8: Configure the hardware
Step 9: Print the project
Step 10: Assemble
Step 11: Mount
Step 12: Pat yourselves on the back.
There is a shopping list in the description at the top.
- Fusion 360
- Rapid prototyping
The large notch in the base plate is to accommodate the Cat5 coupler.
The plastic shroud around the POE converter needs to be removed and replaced with heatshrink tubing.
Small wood screws can be used to secure the raspberry pi to the SBC mounts.
We had a very hard time getting any other USB cables to fit in the box, so substitute at your own risk.