for a trigger, you can get a motion detector flood light thing for under $10 at walmart. then buy adapters that go into the sockets and it makes them outlets. one outlet to the inverter, the other to the power of some pc speakers. have an mp3 player or cd player in a loop constantly running. when someone walks by, the motion sensor sends power to the crawler and the speakers.
I just posted mine too! YouTube - Grave Grabber
Did you have any problems with the shirt getting caught in the linkage.
I had to take the linkage apart to get the shirt out.
Not sure how I am going to do the shirt so that it does not get in the way.
Nice hands too.
But I have already spent way too much money on parts to buy anything else.
I made mine out of coat hangers, aluminum foil, and plaster cloth.
Hauntcrazy, I have'nt run into that problem yet. I did round and smooth all my cuts of alluminum.
Uncle, Yes I plan to use some chicken wire around the motor. I don't think I need it around the elbow joints.