This robot is pretty harmless though I'm glad the knife wasn't on it when it fell. This is a little more robotish version of my first goosestepping robot; it has an Sr04 ultrasonic sensor, a little directional ability with a modified servo for 360 degrees, Arduino Uno, and two servos to provide walking movement. The knife is really just a counterweight without which the robot would not move. Another servo opens and closes the leg(s).
Made the robot frame from cardboard and hotglue. A ridiculous use of robot parts but was fun to do. I do have plans for version 3 by replacing the counterweight mechanism with something else.
I made a little bracket to hold the battery pack up high so that the servo would not
have to work hard to open and close the legs.
I'm pretty proud of the wheel, a bottle cap with some mousepad for tread. Also it was the first
time I modified a servo for 360 degree rotation and it came off nicely.