Led strip workshop - amt 7 aug 2012

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robert_a_cook

Slides shown at LED Strip light workshop on 7 Aug 2012. Includes links to resources.

Technology Business

WS 2801 based individually addressable LED strip -
http://www.sparkfun.com/products/10312
Or on eBay

Constant-current PWM

Three channels for RGB
http://www.sparkfun.com/datasheets/Components/LED/WS2801.pdf

Power and wiring
0.02 amps per channel
3 channels per pixel
32 pixels per meter

0.02 x 3 x 32 = 1.92

~2.0 amps per meter

Wiring guidelines

• Don’t power more than 1m from Arduino
• Keep power wires thick
• Inject power every 2 meters

Other sources

• Wires with pre-crimped terminals
http://www.pololu.com/catalog/category/71
• Crimp connector housings
http://www.pololu.com/catalog/category/70
• Power supply
https://www.adafruit.com/products/658

Thanks

robertcook@gmail.com
Suite 213 in this building

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