Author Topic: pros and cons of moters and servos  (Read 3554 times)

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Offline JedTopic starter

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pros and cons of moters and servos
« on: August 05, 2009, 01:43:59 PM »
what are the differences of moters and servos i am using the Axon
« Last Edit: August 05, 2009, 03:03:12 PM by Jed »
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Offline SmAsH

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Re: pros and cons of moters and servos
« Reply #1 on: August 05, 2009, 03:07:10 PM »
motors will require a h-bridge to drive them as connecting them to the axon directly will fry the pin.
servos are a dc motor, a gearbox and a h-bridge all in one nice, neat package... but they need to be modified to rotate continuously... there are hundreds of topics in the forum about this, search it.
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Offline Soeren

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Re: pros and cons of moters and servos
« Reply #2 on: August 05, 2009, 06:08:42 PM »
Hi,

Quote from: SmAsH on August 05, 2009, 03:07:10 PM
motors will require a h-bridge
Nope, they'll require some kind of driver, of which an H-bridge is just one example.
(Capital "H" in H-bridge please, that's the figure that gave the circuit its name - an h-bridge must be an H-bridge where the rightmost top transistor has gone permanently O.C. - which, by incident, is pretty rare, considering that the typical failure mode for a transistor is shorted).
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Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

paulstreats

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Re: pros and cons of moters and servos
« Reply #3 on: August 05, 2009, 06:24:07 PM »
Quote
an h-bridge must be an H-bridge where the rightmost top transistor has gone permanently O.C. - which, by incident, is pretty rare, considering that the typical failure mode for a transistor is shorted

he he..

To answer the original question...

A motor is a motor.

A Servo is a device that contains a motor along with a closed loop system, driver circuitry, gearing, and 1 wire communications.

To put it short:
A servo is an all in 1 package that has restricted movement unless you are willing to modify it.

A motor is 1 single part of a drive system.
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