1. 1 Christmas Light Display (this presentation repeats every 2.5 minutes) Our 19 th year Over 6000 lights Uses $1.20 of power daily (equivalent to the use of 2 hair driers) Recycle materials content about 75% Lights on 6:00 PM to 10:30 PM from Dec 1 to Jan 2, 2002

2. 2 Snowflakes Computer controlled ¼ mile of wire 48 computer outputs 388 lights 816 solder connections Built in 1982 5 minute program cycle

3. 3 Spruce Trees Computer controlled with a 68HC11 MCU 3 –interacting pulse- width-modulated light strings that create the “fading” effect.

4. 4 Island Computer controlled “Monoliths” in center are micro-controller controlled. Total light elements=840 on 120 display units Holes drilled for circuit boards=1620

5. 5 Flowers Each flower has a micro-controller in it. Separate wiring pattern for each flower Total number of lights=112

6. 6 Star 1 motor 2 micro-controllers This star is 4 th made in 16 years

7. 7 Gate Uses “neon” wire Two high-voltage inverters drive the display

8. 8 Nativity 2/3 scale 300 lights Neon wire 2 motors

9. 9 Crab Apple Tree Microcontroller 400 red lights 400 clear lights

10. 10 Cones 336 light elements 4 motors 4 fluorescent bulbs

11. 11 Lanterns 3 lights in each bowl 3 colors fade like Spruce Trees

12. 12 Control Cabinet Front Snowflake simulator Fader computer Island lights computer Monitor timer, power monitoring Fader, island light monitor Startup and presentation computer       Snowflake computer (not shown) 

13. 13 Control Cabinet (rear) wiring  Power Supplies

14. 14 Recycled materials Motors – from printers, disk drives Wedges – Lite Brites, computer furniture Strobe - from camera Flowers - party bowls, margarine containers Island - salad bowls Monoliths – old computer equipment Angel – CD, backlight TV, oil drilling equip. Wires and cable – all surplus junk Computer boxes – all surplus junk

15. 15 Comments? Email: lightman@raiderraicing.com