Canon PowerShot SD700 IS
ƒ/2.8
5.8 mm
1/80
Scorpions have bad eyesight, and some just wait patiently for food to stumble in front of them. It can be a long wait. Some scorpions go a year between meals.
For our LEGO NXT robot scorpion, we used the ultrasonic sensor to sense the proximity of food, and it seemed appropriate to have it hunt in an infinite loop. (Short video)
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