SAR (Sound Activated Robot)
Specifications: SAR is a robot that uses a sound activated circuit from www.allelectronics.com to run a 1.5-3vdc motor with a weight on it to vibrate and move when it hears a sound. Also SAR has three blinking red LEDs for looks and is powered by two AA batteries. SAR didn't cost much to build because all I had to buy was the sound activated circuit and the three red blinking LEDs. Everything else came from my junk heap.

Parts:
1 dc motor 1.5-3vdc $Free
1 weight for dc motor $Free
1 piece of scrap pc board $Free
1 push on push off switch $Free
2 AA batteries $Free
Scrap wire $Free
Craft wire $Free
2 cable ties $Free
Solder $Free
3 red blinking LEDs from radioshack $1.39 each
1 sound activated circuit kit from www.allelectronics.com $4.75
Total cost to build: $8.92+shipping for sound activated circuit kit. Which was about $5.

Time to build: One afternoon and about one hour of the next morning.

This is my fifth robot to build from scratch.

Demensions:
Height: 7/8 inches
Length: 11 1/4 inches
Width: 3 7/8 inches
Weight: N/A
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