PiCasso Design Challenge - POV Globe Blog 6

RE: PiCasso Design Challenge - POV Globe Blog 6

dubbie — Tue, 23 Apr 2019 12:21:55 GMT

Dale,

You are making some good progress with the mechanical parts. I look forward to seeing it all up and running and making the globe visible.

Dubbie

RE: PiCasso Design Challenge - POV Globe Blog 6

balearicdynamics — Mon, 22 Apr 2019 08:05:34 GMT

Good update, Dale.

I have a couple of points to have some clarification on your last progress, something that IMHO may risk to introduce some weakness to the rotation. As you should reach a considerable RPM and the globe is not small, why you don't use direct wiring and a breadboard PCB (soldered, I mean) instead of the plastic one? Also if it is relatively lightweight, as the rotation speed increase as much its mass influences a possible vibration or worst. With a soldered small PCB you can keep it perfectly aligned to the rotation axis eliminating this risk.

The second is respect to the traction method. The new motor you used seems robust and reliable for the scope. As you already have trapezoidal pulleys, why don't use a trapezoidal belt instead of those I see? I mean those belts used for the car motors. You can find for cheap almost everywhere as spare parts of every diameter.

Enrico

RE: PiCasso Design Challenge - POV Globe Blog 6

14rhb — Mon, 22 Apr 2019 08:00:59 GMT

Hi Dale, a great update, thank you. I like your drive setup and belt (which looks like a piece of cord). I hope all goes well and looking forward to reading about your progress.

Rod