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

benholmen.com
4 points·by benholmen·11 months ago·1 comments

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

benholmen.com
1,145 points·by benholmen·11 months ago·144 comments

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benholmen
·11 months ago·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
·11 months ago·discuss
I had some down time when the Y axis stepper motor managed to unplug itself overnight!
benholmen
·11 months ago·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
·11 months ago·discuss
Hey, I know you! Thanks for checking it out, looking forward to seeing you at the next PHP×MSP!
benholmen
·11 months ago·discuss
$250!
benholmen
·11 months ago·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
·11 months ago·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
·11 months ago·discuss
It was indeed < 1 day
benholmen
·11 months ago·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
·11 months ago·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
·11 months ago·discuss
I was extremely pleased with that discovery! Needed something a little grippy, pliable yet firm, and disposable.
benholmen
·11 months ago·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
·11 months ago·discuss
Western Wisconsin, Eau Claire. It's beautiful here
benholmen
·11 months ago·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
·11 months ago·discuss
Rozin was a direct influence on me! Seeing his stuff ~10 years ago got me thinking about unorthodox displays.
benholmen
·11 months ago·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
·11 months ago·discuss
Genius. I'll do this when I install it in my Zoom background and take it off the internet
benholmen
·11 months ago·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
·11 months ago·discuss
TTFP will surely be < 1 day
benholmen
·11 months ago·discuss
That it, the method will forever be called the Vanna White Method