Blinkenschild

Description

One day i woke up with the urge to rise up and stick it to the man.
And what would be more suitable for that job than blinky lights eh?

I used:

960 RGB pixels - RGB-123 ( http://www.hackerspaceshop.com/ledstrips/rgb-123.html )
a microcontroller - teensy 3.1 ( http://www.hackerspaceshop.com/teensy/teensy-3-1.html )
a bluetooth receiver (http://www.hackerspaceshop.com/teensy/teensy-3-1-bluetooth-module.html)
a SD card slot (http://www.hackerspaceshop.com/teensy/teensy-3-microsd-module.html)
lots of LiPo
and a custom Android.app

The main documentation for this project is on the metalab wiki. ( https://metalab.at/wiki/Blinkenschild )

Over 200 hours of work went into this "weekend project" but the result is pretty groovy.
We even made a video with a horse for reference.

Details

Components

15 × RGB-123 64 Pixel WS2812B-10 Board (http://www.hackerspaceshop.com/ledstrips/rgb-123.html)
1 × Teensy 3.1 A very small powerful microcontroller (http://www.hackerspaceshop.com/teensy/teensy-3-1.html)
1 × Micro SD card slot http://www.hackerspaceshop.com/teensy/teensy-3-microsd-module.html
1 × Bluetooth Serial module http://www.hackerspaceshop.com/teensy/teensy-3-1-bluetooth-module.html
1 × Wood, Acryl, Spraypaint, Foam inlay, Aluminium profiles

View all 6 components

Discussions

Roman M wrote 03/06/2016 at 13:30

Link is live. Search for Magic Pixel on Kickstarter.

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Roman M wrote 03/03/2016 at 21:52

See amazing LED project here: http://kck.st/1Oi2sHC
Simply and affordable...

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overflo wrote 03/03/2016 at 22:05

Broken link. Could this be spam for a kickstarter campaign?

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josephchrzempiec wrote 09/21/2015 at 02:36

How many leds are going across and down?

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Zardoz wrote 07/25/2014 at 15:32

This a real GEM of a project !, I can see this taking off sometime, 21st century protetestors, all it needs is a few hundred perps to get airplay

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Eric Evenchick wrote 04/04/2014 at 15:31

Nice sign, bonus points for the HaD logo :)

Did you have any issues with hooking up 15 LiPo cells in parallel? It looks like you have a bunch of them going into a junction box, what's inside there?

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overflo wrote 04/04/2014 at 15:55

hey,

the RGB-123 use WS2812B-10 leds
the datasheet rates them between 3.5 and 5.5v
some guys had trouble running WS2812B at 5V with 3.3V signal levels.
turns out the WS2811 datasheet says that the signal / power ratio should be no less than 0.7.
running the whole setup at 3.7-4.2V from the lipos means that we are well within the 0.7 ratio with our 3.3v signals.
thats why i run them DRIECTLY from the lipos and use no levelshifters or step-up converters anywhere.

the box is just a bunch of JST connectors and fat wires to transport the current away safely.
everything worked out much better than expected :)

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Eric Evenchick wrote 04/04/2014 at 16:30

Ah, I guess this would work out fine if they are all charged to begin with. I would be worried about mixing LiPos with different states of charge.

Are you sure? yes | no

Blinkenschild

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Blinkenschild

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