Vulcan Scanner

Print is finished, and now that I have a test-ring of some sorts I can try some finishing and sanding etc.

I'm not convinced this is exactly the result I want. More on this later.

..the result

It's supposed to be easy, but limitations of tools may obscure something as simple as a circle.

Tinkercad has limitations in the amount of used faces, you can set it to 999 but you still end up with 64.

So I looked at something like this:

https://www.tinkercad.com/things/dQZj5MgORtD-smooth-circle-by-jayteeau

And a video about how to do it (see below), basically rotating copies of the faces over each other, making a much smoother surface, and making that one new object to use.

This workaround goes fine with smallish rings, but a 100x100x100mm sphere (you have to do it twice, since it is a sphere also in 90 degrees rotation) in Tinkercad hit the maximum object size, long processing times, waiting and errors, so no go there, at least I tried ;)

In the end I took [https://www.printables.com/model/165566-sphere] Igor's sphere and limited the object size with https://myminifactory.github.io/Fast-Quadric-Mesh-Simplification/

I cut up that sphere to make a ringlike rounded object I wanted. It's printing now, will show later.

Used tool: tinkercad. cut up a sphere, cut out a sphere, and exported the STL, imported and sliced then printed with my Ender 3D, but sofar, not round enough.

I'm gonna try another way, or another tool.

See Project pics as well for more info. I'll keep you posted.

Cheers, Leonard

Got home :) 

Can’t get slice of pie at the moment, what I could get though is a bananapi zero. Specifically, a Banana Pi M2 Zero, 1.2 Ghz quad core ARM Cortex A7 with 512 MB DDR3, Mali 400-MP2 GPU.

Probably sufficient to start with. The dimensions are conveniently the same as a pi zero.

The design of this project has been done a long time ago. In the future of this project this will become clear.

It is my task to make it an actually working device.
Raspberry Pi is a good choice, it is a fully working computer, has a working operating system, ready to connect a display equipped with HDMI interface.

Yesterday I looked up some techniques to smooth 3D printed parts. I print with PLA and will use something like:

- Bondo 3M glazing and spot putty

- A filler and sandable primer, 2 in 1-type

We’ll see what kinds of results this will yield.

Once I am home I’ll try and hook up a few sensors that I still have, on a raspi, and start looking up how other ppl log and/or store.