Author Topic: servos-what the hell do they do  (Read 1798 times)

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Offline shyamgeniousTopic starter

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servos-what the hell do they do
« on: March 07, 2011, 07:04:45 AM »
[glow=light blue,2,300]as a newbie[/glow]i would like to ask a standard question(it may seem silly but anyways)
what do servos do?? do they move like dc motors and could be used for wheels or do the rotate things and can be used for thi ??? ??? ??? ??? ??? ??? ??? ??? :o

Offline praveen_khm

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Re: servos-what the hell do they do
« Reply #1 on: March 07, 2011, 07:49:59 AM »
I guess this might help you to start with

http://www.societyofrobots.com/actuators_servos.shtml

Cheers,
Praveen
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Offline Juicaj1

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Re: servos-what the hell do they do
« Reply #2 on: March 13, 2011, 03:09:07 PM »
servos are pretty much motors that don't rotate 360 (but can be modified to do so) and use fancy trigonometry and electronics magic to rotate specific degrees. A more precisely controlled motor essentially.

Offline rbtying

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Re: servos-what the hell do they do
« Reply #3 on: March 13, 2011, 04:21:48 PM »
[...] use fancy trigonometry and electronics magic to rotate specific degrees. [...]

No trigonometry is involved - it's just a position-PID controller with (usually) a potentiometer as the input value, and a setpoint scaled to the potentiometer's min and max values.  The cheapest ones aren't even PID - just P or maybe PD. 

 


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