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Recap: I spent 6 years building a ridiculous wooden pixel display

benholmen.com
4 points·by benholmen·hace 11 meses·1 comments

Show HN: I spent 6 years building a ridiculous wooden pixel display

benholmen.com
1,145 points·by benholmen·hace 11 meses·144 comments

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benholmen
·hace 11 meses·discuss
A few weeks ago my ridiculous kilopixel wooden pixel display went a little crazy on the internet. I wrote about the response and the experience as a whole, and feature some of the art that was drawn on my display.
benholmen
·hace 11 meses·discuss
I had some down time when the Y axis stepper motor managed to unplug itself overnight!
benholmen
·hace 11 meses·discuss
Oh yeah I love split flaps! Even considered them for this project but they're cost prohibitive and that idea is already out there.

The sound those things make is just perfect.
benholmen
·hace 11 meses·discuss
Hey, I know you! Thanks for checking it out, looking forward to seeing you at the next PHP×MSP!
benholmen
·hace 11 meses·discuss
$250!
benholmen
·hace 11 meses·discuss
Definitely! I scaled up to 3×21 to validate some things and immediately broke a lot of what I thought would work.

I tested a 1×10 grid of the wooden pixels to try out some different variations as well.
benholmen
·hace 11 meses·discuss
I love this so much! Will it be mounted so that gravity makes the pins fall back down or do you need a retraction mechanism?
benholmen
·hace 11 meses·discuss
It was indeed < 1 day
benholmen
·hace 11 meses·discuss
I love this project! I was well on my way with the kilopixel when I find him or it would have given me pause.

He's optimizing for some very different things though.
benholmen
·hace 11 meses·discuss
Thanks for thinking through it! I've found that moving left-right is a little noisier and has a little vibration - up-down is smoother. However, it's not that noisy and it'd be fun to experiment with different algorithms for finding the next pixel.
benholmen
·hace 11 meses·discuss
I was extremely pleased with that discovery! Needed something a little grippy, pliable yet firm, and disposable.
benholmen
·hace 11 meses·discuss
I think the issue is that I'm streaming to disk with ffmpeg and recording at 5 fps to save space. OBS must be locked to the same frame rate since it's sharing the webcam?

My original concept included two webcams, one for OBS, one for ffmpeg. Guess I should have gone with that!
benholmen
·hace 11 meses·discuss
Western Wisconsin, Eau Claire. It's beautiful here
benholmen
·hace 11 meses·discuss
Pretty quiet! I spent some time figuring out how to make sure the stepper motors don't whine (the answer is microstepping and decent motor controllers). The pixel turning is very quiet unless it misses slightly, then it makes a clunk.
benholmen
·hace 11 meses·discuss
Rozin was a direct influence on me! Seeing his stuff ~10 years ago got me thinking about unorthodox displays.
benholmen
·hace 11 meses·discuss
This is incredible! I can appreciate how much work it took to make this happen. Well done!

I was recently in the presence of some linotype machines from the 1800s and it's so good to be humbled by the achievements of people who came before us. That machine was so complex, I could barely begin to figure out how to manufacture one. Your discussion of looms reminds me of that!
benholmen
·hace 11 meses·discuss
Genius. I'll do this when I install it in my Zoom background and take it off the internet
benholmen
·hace 11 meses·discuss
Oh I kinda love the idea of drawing the next one based on the pixel diff! Would be fun to game that queue.
benholmen
·hace 11 meses·discuss
TTFP will surely be < 1 day
benholmen
·hace 11 meses·discuss
That it, the method will forever be called the Vanna White Method