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

1. LED strip light workshop

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

4. Constant-current PWM
Three channels for RGB
http://www.sparkfun.com/datasheets/Components/LED/WS2801.pdf

5. SMD 5050 RGB LEDs used on strips

6. Single “pixel”

9. Pulse-width modulation

11. 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

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

14. 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

15. Thanks
robertcook@gmail.com
Suite 213 in this building