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I am thinking that the way to ace the marble installation would be to go completely glueless. Size the holes a few nm undersize, then try to fit the marbles in frozen and let expansion seat them. Maybe that wouldn't work, but worth a shot and easy to enlarge the holes slightly if necessary if it doesn't.

287th subscriber. Just saying for when you go beyond 10k or more.😊

What you and most people today call "more difficult" was the standard on how the first cubes was made :P

This guy is so kind ^__^

In terms of making the weather display silent, I would suggest small stepper motors and silent drivers, they should be more than powerful enough to move the discs and with silent drivers at low speed they are really quiet. Also you can count the steps then for the positioning of the discs. Since you have 4 discs, an arduino with a CNC shield can connect 4 stepper motor drivers or you could buy a 3D printer mainboard, they have at least 4 stepper motor connections. Another more expensive option would be to use brushless motors and something like an O drive, but that is definitely overkill. Stepper motors are likely the best and cheapest option but using higher quality brushed motors with gears could be an option, maybe something to look at would be a “Geneva drive”, it provides a nice stepped rotation from a continuous rotation.

Indeed a weird way to make an led cube. You sure are original by making a 5 high instead of a 4 high cube, the 4 high makes for very elegant charlieplex wireing. The teensy 4 is way to powerful and expensive for this. A couple of transistors/mosfets and multiplexing combined with chalieplexing on the esp32 to reduce pins would have made more sense maybe?

Nice video, thank you :)

You need to sort out your levels. Your intro music is way too loud compared to the rest of your video.

Is this because it was 2020 and you could not get any parts at all to do this the right simple way? A simple ws2812 string requires one pin for all leds..Or the PL9823 leds that are not smd

Hi David, Love the video. I like how it is a small journey. Keep up your work. I always want to do some small projects in my time. Wish you the best man.

I have been thinking about building something like this, thank you for the inspiration. I will be using an NVIDIA Jetson or similar because I want it to do AI on the fly. I like the idea of having additional modules instead of it being all one piece. Maybe I will make some form of stackable pack that i can just plug in parts that ai need as needed. You will not need many things to browse the web, so if you unplug the module you save power. Maybe one day I will get to this project.

I like the concept. I think a resin printer with clear resin and goldfish shapes cut in half just large enough to trap some air and an led then glued together would make this next level but i guess with resin fish you would likely hear a clank when it hits the edges of the tank. Maybe with something clever like a vortex or something it could be avoided not sure but it would definitely look cool with actual fish shaped lights. I love the project!

Epic video bruv keep it up my guy 👍😃😁😆

the weather display has bioshock vibes, definitely going to make one at some point. The solar system lamp would be great if the planets moved based on nasa data

really cool test project

nice projects. what about the blue block with yellow cogs on the wall?

Cool video David, keep on making!

man check out the Sony Vaio Duo 11, his keyboard solution is really similar to what you wanted at the beginning with the slide keyboard, maybe you can repurpose one of those chasis replacing the board with the PI , I'm not an electrician and also dosnt deeply understand this matters but just love these concepts, keep it up!

3:16 You could have made it a 19*20 matrix and not use an extra multiplexed part, wiring would be a bit harder, but still doable, because you can just split the 20 to 15+5

Keyboard lanyard idea is one of the coolest low-tech solutions I've seen in a while!

th-cam.com/video/aBqBwDwHwUc/w-d-xo.html mouse? would the Pi Zero W have been able to do the job if not running a GUI?

That's Frickin Awesome!😅

Awesome idea, This gives inspiration to a mobile Game dev computer I've been wanting 🤘

I forgot I have epilepsy and woke up on the porch naked. My house doesn't have a porch. My name is Charlie so I guess I got Charlieplexed.

176th sub. he seems like me, add stuff because it is cool and you just can.

Write it bare metal in forth. There would be no flickering and the processor would have plenty of cycles available.

The pi, as i understand requires 5v volts. By supplying lower voltage via a single cell, and all the cells in parallel the voltage was still to low. As for the booster chip. Im guessing it wasn't able to give the max amperage the pi was asking for. 5v 3a is what I shoot for.

frickin cool!

rotate the cube in the results or at least pan back and forth

Excellent, David!

adhd cube.stop moving you are making me sick man

I have only ever idly thought of doing this, and trust me, I would probably have never done it, but the thought has helped me stay awake a night or two. This is freaking awesome, and I don't know how you don't have a ridiculous amount of views by now. You have scratched an itch by brain had but could not provide the spoons for. Thank you.

You completely skipped over one important detail: Dimming! Your explanation only shows how to switch the colors on and off, but how did you dim them? Pulse length for every LED?

Subscribed!

I wonder how one could make a 50x50 led cube :o

are you autistic? (this is a compliment)

You save a lot of pins, but you can only light up a single LED at a time rather than an entire row, reducing brightness significantly. Additionally, it makes the wiring and code more complicated, and unintuitive. Generally, I don't think the tradeoff is worth it, when both microcontrollers with a higher pin count and shift registers are cheaply available. Soldering a LED matrix is already annoying enough with conventional multiplexing. An Arduino Mega, for example, has more than enough pins for this purpose, and the clones are cheap.

Amazing work dude! Looks so pretty! Keep it up!

this is the standard arduino setup...charlieplexed... ive still got my 4x4 cube sitting here i built in 2014...(i would have made more but..didnt have the leds on hand) you should really be using transistors on each row to power the leds otherwise you can burn out the mcu's gpio pin circuitry... ...you almost have a nice grid there to be able to make letters, numbers and symbols on the faces....

The cube looks awesome. What's the intro music?

Dude your head bobbles like Ron Desantis'

Nice idea! I gather the genome is stored on an SD card?

I made a 16 x 16 x 16 led cube. Thats over 4100 solder joints once the bottom plane is attached to the board, and the wires are run to each plane. So ya, thats alot of soldering. And a lot of set up for each, and then debugging was not alot of fun. But it did turn out very cool.

You could look at using mineral oil as a medium to slow down the motion as well.

Awesome work. I'm a big fan of showing our mistakes - that's where real learning happens. So, thanks for that! Also, your Maker Laptop reminds me of Eric Cartman's Trapper Keeper 3000. I'm looking to more stuff from you.

I discovered CharliePlexing only last year when working on matrixed keyboards / Trackpads. This is a great application of CharliePlexing. Thanks for this and I'm subscribing!

if you now put it inside a milky glass case. Imma subscribe

yeah guess every maker tried to do some real time computing on a raspberry at some point, for me it was a remote controlling a rc paramotor over wifi or bluetooth but as you found out too, constantly getting your code interrupted by an OS can be a real pain :D

For an American, you have quite an Italian body language ;-) Looks _really_ great, thank you very much. I think making this cube somewhat larger would make it look even better… I looks rather dense, these LEDs are so strong that they would optically still work fine with more space around them - and make soldering somewhat more ”pleasant“ (if you can say so for 500+ soldering spots ;-)

Nice!