Thanks for all of your help! Hardware is finished, for now.

Jason_Coon · August 16, 2015, 1:27pm

Thanks for all of your help! Hardware is finished, for now. I’ll build something prettier than a black box later. I’m finally going to start working on different ways of mapping this thing.

I added more build pics, videos, and details to the album: https://photos.google.com/share/AF1QipOiXDonv_V-mUsrG0NEBSlGahOliPQL4BNex76m1XIj7Cr_DTraI1gKF2igaL_5BA?key=LUJpU3J2MmRncVhWS0tubVN5dzNjdVFsSGFWdEdn

Source: fibonacci/fibonacci.ino at gh-pages · jasoncoon/fibonacci · GitHub
http://www.youtube.com/watch?v=7XvyuhbEagE

Andrew_Tuline · August 17, 2015, 4:15am

Unfortunately, I’m getting an “403. That’s an error.” accessing the album.

Jason_Coon · August 17, 2015, 1:19pm

Sorry @Andrew_Tuline , try again. I think I’ve fixed the album link now.

Andrew_Tuline · August 17, 2015, 11:58pm

Earlier today: http://imgur.com/jLdocmU,BMlDjD6

Just now: http://imgur.com/jLdocmU,BMlDjD6#1

That’s 15 per spiral with 8 spirals.

Jason_Coon · August 18, 2015, 12:18am

You just had to go bigger, didn’t you?

Thomas_Runge · August 22, 2015, 12:52pm

Hehe. But there is a drawback of being bigger: the distance between pixels in the circumference is very large. This means Andrew has to put the diffuser in a large distance to the LEDs, which in turn means it will get a thick eye catcher.

I really really like your idea of a Fibonacci display. It’s so totally different from the standard 1D (strip) or 2D (rectangular matrix) displays! And the patterns look great!

For a few weeks I’m thinking if my next project should be a 16x16 or 32x32 (rectangular) matrix. Maybe I should start a Fibonacci display instead. Any plans to open the building instructions? I see your code, but one really needs the exact positions of LEDs to copy your design and by able to share code. Something like this http://tinyurl.com/nl3fn9j but better readable.

Jason_Coon · August 22, 2015, 1:31pm

Thanks, Thomas! I can’t take credit for the idea, that goes to @Jim_Bumgardner , who inspired me to make it in the first place.

I wouldn’t worry about using this exact layout, I’m finding lots of things I’ll change when I rework this one, hopefully soon. Other than the spiral arm and XY mapping (which in hind sight weren’t hard), all the other patterns should look great on any layout.

I’m also going to try using 1/16" sheet metal instead of the 1/8" hardboard. I’m just not happy with how wonky and loose some of the LEDs are.

I’ve been playing around with this processing sketch, trying to find the ‘best’ layout: http://www.openprocessing.org/sketch/209971 You can use the keyboard to adjust the parameters (scale, angle, count, etc).

Jim_Bumgardner · August 22, 2015, 6:25pm

Jason: Looks great! Looks like we both used the same frame…

Thomas: I wrote a processing sketch that outputs a PDF file which I used in the laser cutter. Happy to share it if you want to tweak it. Here’s the pdf:

http://krazydad.com/test_spiral_11_5.pdf

And here’s the code

gist.github.com

https://gist.github.com/jbum/2c7813f3f32f4cdfe6ff

spiral_faceplate.pde

// Jim Bumgardner 2015
import processing.pdf.*;

boolean outputPDF = true;
boolean outputNumbers = false;
boolean addFrameHoles = true;
String outputFileName = "test_spiral_11_5";

float mmToPoints = 2.83464567;
float mmtoInches = 0.0393701;

This file has been truncated. show original

Thomas_Runge · August 22, 2015, 6:38pm

Thats really great, thank you!

But if I want to reuse Jasons code (which he made public) I need to know, on which position which LED number is. Otherwise the pattern look totally different if not confusing.

Jim_Bumgardner · August 22, 2015, 7:20pm

There’s a flag in the code that makes it render with wiring-order numbers… (and a wiring array on the bottom).

Jason_Coon · August 23, 2015, 2:29am

Thanks, Jim! I picked up a 10" extra deep shadow box on sale at Michael’s: http://www.michaels.com/studio-decor-extra-deep-shadowbox-black-10in-x-10in/10229048.html I’m going to try to redo it and make it fit in a smaller one next time. It’s just too deep.

Thanks for sharing your PDF and processing sketch, that’s amazing, and will come in very handy!

Thomas, I’ll clean up my drawings and add them to the album the next chance I get. I’ll be redoing it soon, and will update when I do.

Thomas_Runge · August 23, 2015, 7:59am

Ok. Have to order the LEDs first anyway.

Andrew_Tuline · August 23, 2015, 1:52pm

@Thomas_Runge You’re absolutely right about the larger issue. I ended up not being able to use the last (farthest) element as the LED’s were too far apart.

Chithru_Mihiripenna · August 24, 2015, 10:36pm

Hi Jason
I was trying to work out your code, but I’m getting an error on line 31 saying ‘CRGB’ has not declared and EVERY_N_MILLISECONDS’ was not declared. I’m still learning. so sorry if this is a silly question.

Jason_Coon · August 24, 2015, 11:29pm

No problem, using a Spark Core and the online IDE? Included the FastLED library?

Chithru_Mihiripenna · August 25, 2015, 8:31pm

Hi , sorry i’m using a nano and just the fastled, can try on a teensy 3.1 the reason why I like your setup is that you use a single string of led? as I said I’m just learning this now. thanks for your reply can you “dumb” it down for me.