Difference between revisions of "LEDLightDistrict"
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=Other Suggested Approaches=
=Other Suggested Approaches=
Revision as of 21:20, 26 June 2012
Project to LED'ify the outside facing glass 'block' wall. each glass box will be a pixel
- 1 Wall
- 2 Initial Plan
- 3 Full LED addressable wall
- 4 What we could buy
- 5 Other Suggested Approaches
- 6 Code
As seen behind the blinds here. Better pics to come
Create a 7 segment clock. User:amx109 is the owner and implementer of this project.
The clock will utilise 2 x TLC5940 to address 28 '7 segment' elements, spanning a grid of 21x7 blocks. The aim is to complete the clock by 16/05
Full LED addressable wall
What we could buy
Other Suggested Approaches
Cheap LEDs, TLC5940's
The one Antony brought in as Sample was bought: USD 1.21 @ volulmes 20 squares. http://www.aliexpress.com/fm-store/701799/209889132-519156534/20pcs-string-waterproof-led-pixel-module-4pcs-SMD-RGB-5050-1pcs-WS2801-256-gray-level-DC12V.html
... big square pre-wired pixels: http://bliptronics.com/item.aspx?ItemID=88
We discussed mounting these in the corner of each brick at an angle so the light diffuses better. Need to experiment to see what works best.
The above LED strips/chains are easily controlled via an Arduino with the excellent FastSPI library: http://code.google.com/p/fastspi/
Some suggestions by Axel: http://www.nerdkits.com/videos/ledarray2/
Shift register with pwm output
product number: 74595
Simulate a pwm based shift register
A 132 channel led driver with pwm...
We could order samples. 3 samples per person, so if 3 people order a sample, we have sufficient channels...
And at 8$ they aren't that expensive either...
Though I might not understand what they do and they might be dissapointing...
These are bloody cheap though they are supposedly hard to program.
20$ per roll, and you have to buy 5 rolls minimum... but... 5m per roll, and... 40 color leds per m (from what I can tell). That means that we buy several screens, but in total it will still be cheaper. Strips can be cut per segment of two (studying the picture, correct me if I am wrong). This makes extending them relatively easy. We cut all wires to the appropriate length in one go. We have to connect some 150 of these strips, but it is repetitive work, so we can do it very fast.
Some relevant info
Create online api for running code on the screen
It would be cool if people could browse to a site and enter code that they can run on the screen.
Great fun for teaching people about coding...
This does mean that you create a gateway for someone to run code on the server, and this code could be hostile.
How to keep it secure:
A game of snake. This project is almost done. It just requires some more practical website for controlling the snakes (right now they can be controlled using keyboard, which sucks for smart phones). See Snake implementation
Super bomber man
No work done yet
It is practical to only work on it after better abstracting the framework to be used.
Conways Game of Life
A cool screen saver.
Non member participants