Halloween robotic backpack

Hi,

This Instructable covers the creation of a robotic backpack, designed so that I could stroll around our town scaring people at will for Halloween.

Its a bit quick and dirty as I'm not feeling well tonight, so I will come back and elaborate in a few days

The basic idea was an outreach program from the local genetic research facility, showing that genetic material could be safely transported through the community using specialised containers.

All a bit cheesy, but that is what Halloween is all about isn't it :)

Step 1 Shell

The basic shell is a wooden box with supports and gaps in the appropriate places for the motors, mechanisms, etc

The main parts are 

Eyes - ping pong balls on a mechanism activated by a hobby servo.

Fingers - bamboo fingers again deployed and retracted by two servos.

Flip out head - I searched through my old motors and found one that I could easily attach an arm to allow the "charging" of a bungee cord.