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Unread 09-01-2005, 15:43
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Sparks333 Sparks333 is offline
Robotics Engineer
AKA: Dane B.
FRC #1425 (Wilsonville Robotics)
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Join Date: Feb 2004
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Re: Hall Effect Sensor.

Quote:
Originally Posted by Nixterrimus
Alright so this isn't a gyro, I'm good with that, but is this what was Demoed at the kickoff where the robot was able to correct its position? Does the hall effect sensor return your angular heading?
I BELIEVE what was demoed at the kickoff (not 110% sure) was the accelerometer. An accelerometer gives back a reading that tells how fast you are accelerating, i.e. changing speed, in a given direction. Using some programming, you can sense when you are moving and take steps to remedy it. A hall-effect sensor uses a magnetic field to detect a metallic presence, and therefore does not return angular headings. I am pretty sure they put out pulses when a metallic presence is detected. It's just an FET, in other words.

Sparks
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ICs do weird things when voltage is run out of spec.

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