Crawler

I made a crawler with a little fabric case. I tried other smaller boxes, but the boxes itself were rotated and stood up instead of lifted and moving. I found that a little bigger and heavier one containing the servo motor in one corner keeps it's orientation and moves horizontally because of gravity.

Material

Servo motor,

Acrylic + Museum Board for Leg

Strings for joining the motor and leg

Fabric case

Here is a video.

http://www.youtube.com/watch?v=OdaGKWMKtHE