servomotor modification
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I have read somewhere that a servomotor can be modified to run
cotinuesly in one direction but I do not know where i read it.
I have received a servomotor with the homeworkboard. Is it posible to
modify this motor so that it can run 360°? Can it than run in one
direction cotiniusly? How is it done?
Thanks.
Willy
cotinuesly in one direction but I do not know where i read it.
I have received a servomotor with the homeworkboard. Is it posible to
modify this motor so that it can run 360°? Can it than run in one
direction cotiniusly? How is it done?
Thanks.
Willy
Comments
somewhere that shows (might look under servor
question).. I used it to modife one... still playing
with it though... you'll need 2 resistors and a good
pair of pliers (or a way of removing a notch on one of
the gears.)... hope that helps.. :-)
Tony
--- satchid23 <satchid@p...> wrote:
> I have read somewhere that a servomotor can be
> modified to run
> cotinuesly in one direction but I do not know where
> i read it.
> I have received a servomotor with the homeworkboard.
> Is it posible to
> modify this motor so that it can run 360°? Can it
> than run in one
> direction cotiniusly? How is it done?
> Thanks.
> Willy
>
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
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> basicstamps-unsubscribe@yahoogroups.com
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modifications that remove the servo part of the servomotor to become a
simple geared motor. >>>>>>>>>>I would like to program the basic stamp
telling the servo motor to go 100 turns + 15°.<<<<<<<< So I need to
modify my servo motor to be able to act as a servo in multy turn mode.
Thanks
Willy
Original Message
From: not today [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=yQ_zKt_o19rbDGtrWw1IiyleIl9Uc_raeANncx8Fht2gVmS5nbR_-cOJtQQnjitwZfKeT3xyDofA4sPdX1JLhw]dakota_99_64804@y...[/url
Sent: woensdag 3 maart 2004 6:43
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] servomotor modification
do a seach on servo in the messages.. there a link
somewhere that shows (might look under servor
question).. I used it to modife one... still playing
with it though... you'll need 2 resistors and a good
pair of pliers (or a way of removing a notch on one of
the gears.)... hope that helps.. :-)
Tony
--- satchid23 <satchid@p...> wrote:
> I have read somewhere that a servomotor can be
> modified to run
> cotinuesly in one direction but I do not know where
> i read it.
> I have received a servomotor with the homeworkboard.
> Is it posible to
> modify this motor so that it can run 360°? Can it
> than run in one
> direction cotiniusly? How is it done?
> Thanks.
> Willy
>
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed.
> Text in the Subject and Body of the message will be
> ignored.
>
> Yahoo! Groups Links
>
>
> basicstamps-unsubscribe@yahoogroups.com
>
>
>
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To UNSUBSCRIBE, just send mail to:
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The way a servo works is there is a comparator,
and a motor driver, and a motor, and a variable
resistor, and some gears driving an output shaft,
inside the case. All for $15.00, such a deal.
The servo expects to recieve a high-going pulse
of between 1 and 2 mSec, repeated every 20 mS to
50 mSec. A 1.5 mSec pulse indicates center position,
while 1 mSec is all the way left, and 2 mSec is
all the way right (I could have those backwards).
When the servo moves the output shaft, the variable
resistor moves also. This changes an internal pulse
width inside the servo -- which the servo compares
to the input pulse width. It drives the shaft until
the internal pulse width matches the input pulse
width, thus putting the servo output shaft where
you want it.
The continuous rotation modification disconnects
the variable resistor from the output shaft, and
sets the variable resistor to its center position so it
is putting out a 1.5 mSec pulse all the time internally.
Then, if you give a 1 mSec pulse to the servo,
it rotates continuously in one direction, trying to
get that now disconnected variable resistor to
rotate and match your input. The result of all
of this is a nice motor with driver, and all your
BS2 has to do is give it a pulse every 20 mSec.
You can stop the rotation by giving it a 1.5 mSec
pulse every 20 mSec.
I'm afraid what you are trying to do (rotate 10 times
and then stop at one point) will require a separate
position encoder wheel on your output shaft, and
a separate circuit to read it. The servo does
not have the stuff inside it to do this by itself.
--- In basicstamps@yahoogroups.com, "Willy Gooris" <satchid@p...>
wrote:
> I found a lot of ways to modify the servomotors. All that I found
where
> modifications that remove the servo part of the servomotor to
become a
> simple geared motor. >>>>>>>>>>I would like to program the basic
stamp
> telling the servo motor to go 100 turns + 15°.<<<<<<<< So I need to
> modify my servo motor to be able to act as a servo in multy turn
mode.
>
> Thanks
> Willy
>
>
>
Original Message
> From: not today [noparse][[/noparse]mailto:dakota_99_64804@y...]
> Sent: woensdag 3 maart 2004 6:43
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] servomotor modification
>
>
> do a seach on servo in the messages.. there a link
> somewhere that shows (might look under servor
> question).. I used it to modife one... still playing
> with it though... you'll need 2 resistors and a good
> pair of pliers (or a way of removing a notch on one of
> the gears.)... hope that helps.. :-)
>
> Tony
>
>
> --- satchid23 <satchid@p...> wrote:
> > I have read somewhere that a servomotor can be
> > modified to run
> > cotinuesly in one direction but I do not know where
> > i read it.
> > I have received a servomotor with the homeworkboard.
> > Is it posible to
> > modify this motor so that it can run 360°? Can it
> > than run in one
> > direction cotiniusly? How is it done?
> > Thanks.
> > Willy
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed.
> > Text in the Subject and Body of the message will be
> > ignored.
> >
> > Yahoo! Groups Links
> >
> >
> > basicstamps-unsubscribe@yahoogroups.com
> >
> >
> >
>
>
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