This instructable will walk you through how to build a robotic plush lizard 
This mechatronic animal, dubbed Leopold the 17th (he went through 17 iterations), was developed as the second project for the Spring 2012 Things That Think class at The University of Colorado at Boulder. Leopold, a plush lizard that tracks light sources, dances to the song "I'm so excited" by the Pointer Sisters when finding a sufficiently bright source.

Step 1: Supplies

To make Leopold (or a close relative) you will need:

2 yards of the top body fabric (we used a polar fleece)
3 yards of lining fabric
2 yards of bottom body fabric (this may be the same as the top fabric)
Small amounts of felt (white, black, red)
Polyfill stuffing

1" x 2" x 2.5'  pine board
6 - 1/2 inch hinges

Laser cutter
1/4 in. acrylic sheet
1/4 in. basswood

4 sub-micro servos (we used http://www.hobbyking.com/hobbyking/store/__663__HXT500_5g_8kg_10sec_Micro_Servo.html)
1 large servo (we used http://www.sparkfun.com/products/9064)
2 light sensors


Musical greeting card

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