Make your own POV LED Globe

Parts list (incomplete, see Instructables for more information, affiliate links):
Aliexpress:

Ebay:

In this project I will show you how I combined a couple steel pieces with an Arduino, an APA102 LED Strip and a Hall effect sensor in order to create a POV (persistence of vision) RGB LED Globe. WIth it you can create all kinds of spherical pictures or even letters which is a definite eyecatcher.

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod

[RobertMilesAI]

I had a go at processing the footage to give a better persistence of vision effect, by layering up offset copies and using the 'lighten' blend mode. It kind of worked?

[LazerLord]

Everyone's saying that the flickering weirdness is caused by the framerate of the camera, but it's not. It's being caused by the shutter speed used to capture the image on each frame. If you film at 30fps, then you want a shutter speed of 1/30th of a second in order to replicate the persistence of vision effect. Any lower, and there will be segment of time in between frames that the camera doesn't record. If you're filming on a DSLR, you should be able to go into manual mode to change video settings in order to get this to work.

[Nerdforge]

Love the structured drawings, makes it easy to follow. Also thumbs up for the LED project!

[kurekureci]

Only thing bad is the camera frame rate. Now we cant see how amazingly it actually looks

[borisdorofeev]

Why would anyone ever dislike any of your videos? Your projects are great, and it seems like you have a ton of fun doing them.

[jeric_synergy]

Whoa! Those are some COMPLETE instructions (as of 5:06). Well done! ANYbody should be able to follow this.

[rodrigo_dm]

nothing like a fresh GreatScott video in a rainy sunday morning

[surveyingfleaproductions]

I couldn't even begin to find the parts to start this epic build. But your videos are always inspiring.

[ilanmower]

+GreatScott for the past 3 months, I have been working on a pov display that fits in a fidget spinner. Due to the small size, I had to go all out SMD on my PCB. I used APA 102-2020 LEDs and attiny85-soic8. Thank you for producing all these great videos.

[garrettturner]

"Anything above 5 Volts would have lead to certain destruction." *Bumps Voltage to 7 volts*

[LanceThumping]

A couple suggestions for how to improve this build and for builds like it in the future.

Replacing the angle braces with ones that have a triangular piece of metal connecting the 2 sides for more stable support.
Consider buying a tap set so that you can tap the wholes in the steel instead of requiring nuts everywhere.
Also since the vibration only showed up after adding the electronics, it is probably mostly a balance issue. You could probably try grabbing some lead shot and tape to play with until it's stable then glue the shot in place.

Take more full advantage of your 3D printer:
You could've made a spot for the self locking nuts to get captured in the plastic for an easier assembly/disassembly.
Instead of just making a block for the circuitry and battery to attach to it would've been cooler it allowed them to be embedded inside and hidden away.

[squalazzo]

very nice, you did it yourself and not bought one of the usual kits on chinese markets, good!

[Omsos]

Not gonna lie, thats pretty freaking cool

[raulleyba]

My man put the ball bearing in the freezer because it wouldn't fit at room temperature. I f***ing applaud such an intuitive understanding of thermal expansion.

[agarceran]

Might want to balance the circle with some counterweights. Also, would like to see someone that can devise a means to power it without a battery.

[thefoster]

You threw off the balance with having a hall effect sensor on one side of the ring, and no counter weight on the other. Even though it weighs net to nothing, at higher RPM that difference could shake that thing apart. Same goes with the arduino and LiPO. What you do to one side, you have to add counter weight to the other, then that thing would spin like a dream. Love your creations! Keep up the great work!

[Clement-xyiv]

I know someone who created that, but they have put something like the brushed motors to power the LEDs without a battery and they also created a software to draw personalized things while is turning..

[karllaun]

I built a similar project using only blue LEDs. I found it necessary to add screws and washers (by trial and error) to get the rotary parts in balance for smooth operation.

[Brutaltronics]

Building these are always a ton of fun

[necoisidois]

Sen bu proje için çok emek harcamışsın.
Ellerine sağlık, çok güzel olmuş video.
Videoların hakkını veren nadir kişilerdensin.
Teşekkürler GS!