I made this several years back, when the Transformers moive was in the theaters. I gutted an old stereo speaker for the speaker and wire. The body is made of thick cardboard and painted.
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Step 1: Partially Open
The sides open downward to form the legs. The head is pulled up and the arms at its sides.
Step 2: Standing Upright
The robot standing up. For fun, I added a light sensing circut taken from a third-hand toy I bought at the flea market. It goes "OWWWW" when somebody walks in front of it and I actually use it as a speaker for my radio.
Step 3: Side View
Side view. Like I said , it works as a speaker.