How to encode for distance information

Migs

Friends:

Lets say I have a disk, like on a wheel, what sensor and how would I go about encoding so as to derive distance information? I want to make marks along the side of the tread on a tracked vehicle and use the "pulse" information to derive distance information. Maybe the TSL1401-DB sensor?

Thanks amigos,

Migs

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"Sometimes we forget that the world itself is paradise." Douglas Coupland, 'Microserfs'
"If the doors of perception were cleansed every thing would appear to man as it is, infinite" - William Blake
"We either make ourselves miserable, or we make ourselves strong. The amount of work is the same." Carlos Castaneda
"One single grateful thought raised to heaven is the most perfect prayer. " G. E. Lessing
“How much of human life is lost in waiting.” Ralph Waldo Emerson
"Men often mistake notoriety for fame, and would rather be remembered for their vices and follies than not be noticed at all.” Harry Truman
My website: www.intoku.net my e-mail:mreznicek@pretensa.com me:Miguel Reznicek

Post Edited (Migs) : 10/13/2009 1:47:56 AM GMT

Franklin

If you move 1 inch between marks then 12 'pulses' will be a foot. You need to test your setup to see how far it moves for each pulse and then count them to find how far you've gone.

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- Stephen

Timmoore

From the picture the motor has a shaft out the back, why not put an encoder there and then measure how far for a turn of the motor?

erco

http://www.parallax.com/dl/docs/prod/datast/ApplyEncoder.pdf

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·"If you build it, they will come."

Duffer

You might try the following motor encoder from the same folks that make the tracked platform that you pictured. http://www.lynxmotion.com/Product.aspx?productID=448&CategoryID=

Duffer

Migs

Those both are excellent bits of information. Thank you so so much. -Migs

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"Sometimes we forget that the world itself is paradise." Douglas Coupland, 'Microserfs'
"If the doors of perception were cleansed every thing would appear to man as it is, infinite" - William Blake
"We either make ourselves miserable, or we make ourselves strong. The amount of work is the same." Carlos Castaneda
"One single grateful thought raised to heaven is the most perfect prayer. " G. E. Lessing
“How much of human life is lost in waiting.” Ralph Waldo Emerson
"Men often mistake notoriety for fame, and would rather be remembered for their vices and follies than not be noticed at all.” Harry Truman
My website: www.intoku.net my e-mail:mreznicek@pretensa.com me:Miguel Reznicek

erco

XLNT odometry info·at··http://www.seattlerobotics.org/encoder/200108/using_a_pid.html·

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·"If you build it, they will come."