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Unread 11-01-2006, 00:09
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FRC #0639 (Code Red Robotics)
Team Role: Mentor
 
Join Date: Mar 2003
Rookie Year: 2002
Location: Ithaca, NY
Posts: 539
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Re: Ultrasonic Range Finder

Quote:
Originally Posted by mechanicalbrain
Mmmmm more or less.... I don't know if you ever used them in Physics class or not but from playing with them they tend to by pretty finicky.
One, you have to assume their's nothing between you and the wall.
Two, you are facing the wall almost vertically, they don't like angles that much.
Three, that they have the range. The Parallax sensor I referenced had a range of 3.35 meters and that's pretty darn good for a ultrasonic sensor.
I admit I haven't actually used one in a robot application but we use them routinely in our physics class. They tend to be best at hitting a flattish surface at close range.
lol, shows you how much I know about this stuff. I believe my team will be taking the trig table approach as we've had trouble with sensors to calibrate in the past. But this ultra sound sensor sounds like it would be just as much a paint to set up as doing the trig for it and compensating for the error.
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Code Red Robotics - Team 639
Ithaca High School| Ithaca | New York | USA | Earth | Sol System | Milky Way | Universe | Some Alien's Locker

WINNER of the 2005 Finger Lakes Regional, thanks to teams 191 and 494.
WINNER of the 2004 Canadian Regional, thanks to teams 33 and 1112
WINNER of Delphi: Driving Tomorrow's Technology Award at the 2007 Finger Lakes Regional.