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Author Topic: servo position feedback?  (Read 2629 times)

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Offline BANETopic starter

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servo position feedback?
« on: March 06, 2008, 12:00:18 PM »
Hello, just wondering if this is posible, manually turning a servo to a position and having the microcontroller tell you the positon of it? 

If so, that would help me out alot with programming and not having to kept scruwg with the servo values.  :D

Bane

Offline benji

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Re: servo position feedback?
« Reply #1 on: March 06, 2008, 12:13:01 PM »
i dont think so :(
good ol' BeNNy

Offline izua

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Re: servo position feedback?
« Reply #2 on: March 06, 2008, 12:42:20 PM »
open the servo and hook up the pot's cursor to an adc.
Check out my homepage for in depth tutorials on microcontrollers and electronics.

Offline benji

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Re: servo position feedback?
« Reply #3 on: March 06, 2008, 04:11:35 PM »
Quote
open the servo and hook up the pot's cursor to an adc.

expermenting with values woudl be much easier   ;D
good ol' BeNNy

Offline BANETopic starter

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Re: servo position feedback?
« Reply #4 on: March 06, 2008, 06:19:49 PM »
thats what i was about to say, taking apart all my servos to find their position is just insane! :P

Oh well, just thought i'd ask.
 :)

bane

Offline kd5kfl

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Re: servo position feedback?
« Reply #5 on: March 06, 2008, 07:50:56 PM »
Yes. But not in 25 words or less.

You need to design and fabricate a digital protractor. An shaft encoder. There are many ways to accomplish this, optical, magnetic strips, et cetera. Most of them beyond the standards of precision available to a guy working in his basement with Harbor Freights less expensive machine tools. All requiring the ability to design electronics gizmos.

Google shaft encoders:

http://www.geology.smu.edu/~dpa-www/robo/Encoder/pitt_html/encoders.html

Offline Admin

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Re: servo position feedback?
« Reply #6 on: March 15, 2008, 05:25:08 PM »
There are 'robot servos' you can buy that can do this. These are popular with the bipeds you can buy on the market now . . . just google around. But of course, they are more expensive . . .

 


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