An LPD6803 based LED module is an “intelligent” pixel, it can memorize its color and passthrough the data and power connection. This means you can drive a lot (several thousand) intelligent pixels with just 4 cables (2x power and 2x data).
Take a look at ladyada’s very informative post about the LPD6803 module.
So where to buy these Intelligent, LPD6803 based Pixels? At my PixelInvaders Shop for example!
Needed Hardware:
- An Arduino Compatible Board
- A 12V Power supply (an old ATX Power supply is perfectly fine)
- A strand of some LPD6803 based LED modules
- Some cables to connect the LPD6803 module
I had some cardboard angle laying around an thought, why not build a DIY Wall Washer.
And here is the result:
The wiring is very easy, take a look at this wiring diagram done by ladyada:
Connect pin 2 (yellow) to the green color of the LPD6803 Module.
Connect pin 3 (green) to the blue color of the LPD6803 Module.
Red is V+, Black is GND.
Links:
- LPD6803 LED module shop
- All source files on GitHub
Two Videos showing the Wall Washer in action. Note: The Wall Washer looks brighter in reality.
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hi,
i’m using a led strip based on LPD6803.
the pins in the strip are lables :
“Di” (+12V), “Ci” (data), “St” (clock), “Li” (ground).
i tried to connect it to the arduino and the power supply the same way u did, but nothing works – there is no light …
any idea ?
Just a wild guess, make sure that the ground connected to the power supply and the Arduino. And if this does not help, I would guess the labels are wrong…