Making a 4-legged servowalker is pretty simple, parts-wise. Basically, you need two motors, legs, a battery, something to make the motors go back and forth, and a frame to hold them all.
2x Tower Hobbies TS-53 Servos
20in heavy copper wire
: 12in for front legs, 8in for rear. I had 10-gauge. 12-gauge should work, but I'm guessing. Battery
is a 3.6v NiMH that was selling for cheap online.
brain is an AVR ATMega 8.
is Sintra, which is hella cool. It's a plastic foamboard that bends when you heat it up in boiling water. You can cut it, drill it, matte-knife it, and then bend it to shape. I got mine at Solarbotics
Drilled project board for the circuit
Snap-off headers (male and female) for the servo and battery connections
A 28-pin socket for the ATMega
Soldering iron and solder, wire
Some tiny bolts to hold the motors on
Here, you see me measuring out the parts, making a sketch for the frame, and then grabbing a ruler to make a paper template. I used the template as a guide to mark with a pen where I'd drill holes in the Sintra.