[simpits-tech] Servo Feedback
Akin, Keenan L
simpits-tech@simpits.org
Thu, 30 Jan 2003 09:14:50 -0600
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Sounds great to me. Tell me when you figure out how to have continuous =
rotation in both directions to run a compass.
=20
Keenan
-----Original Message-----
From: Ken Trager [mailto:kenamt@bellsouth.net]
Sent: Thursday, January 30, 2003 12:04 PM
To: simpits-tech@simpits.org
Subject: [simpits-tech] Servo Feedback
Greetings all
=20
I am thinking ------ so let me throw out my idea
=20
A servo from model airplanes run 90 or 180 degress - - - - right (for =
the MiniSSC)
=20
The motor drives a feedback potentiometer of 5K - the motor will drive =
till it is=20
null out and the motor stops turning.
=20
My instrument (Radar Altimeter ) is driven by a motor and has a feedback =
potentionmeter.
GREAT - ripped apart a old servo and disconnected the motor and pot from =
the servo
and used the servo board to hook up to the instruments motor and pot.=20
=20
Guess what - - - - It worked!!!!!!
=20
Here is the problem -
=20
My Radar Altimeter needs 350 degress of movement for the neddle.
=20
Now I know I can gear it to move 350 degress but that would be jumpie to =
much.
=20
SO -- - - - - I am thinking of replace the 5K pot in the instrument =
with a=20
10 turn 50K precision potentiometer. Since it is a 10 turn - I think =
that
just one turn will give me 5K for what I need.
=20
What do you guys think??????
=20
=20
Thanks
Ken Trager
=20
=20
=20
=20
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<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D929091315-30012003>Sounds=20
great to me. Tell me when you figure out how to have continuous =
rotation=20
in both directions to run a compass.</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D929091315-30012003></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D929091315-30012003>Keenan</SPAN></FONT></DIV>
<BLOCKQUOTE style=3D"MARGIN-RIGHT: 0px">
<DIV align=3Dleft class=3DOutlookMessageHeader dir=3Dltr><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Ken Trager=20
[mailto:kenamt@bellsouth.net]<BR><B>Sent:</B> Thursday, January 30, =
2003 12:04=20
PM<BR><B>To:</B> simpits-tech@simpits.org<BR><B>Subject:</B> =
[simpits-tech]=20
Servo Feedback<BR><BR></DIV></FONT>
<DIV><FONT face=3DArial size=3D2>Greetings all</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am thinking ------ so let me throw =
out my=20
idea</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>A servo from model airplanes run 90 =
or 180=20
degress - - - - right (for the MiniSSC)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>The motor drives a feedback =
potentiometer of 5K -=20
the motor will drive till it is </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>null out and the motor stops=20
turning.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>My instrument (Radar Altimeter ) is =
driven by a=20
motor and has a feedback potentionmeter.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>GREAT - ripped apart a old servo and =
disconnected=20
the motor and pot from the servo</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>and used the servo board to hook up =
to the=20
instruments motor and pot. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Guess what - - - - It =
worked!!!!!!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Here is the problem -</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>My Radar Altimeter needs 350 degress =
of movement=20
for the neddle.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Now I know I can gear it to move 350 =
degress but=20
that would be jumpie to much.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>SO -- - - - - I am thinking of =
replace the=20
5K pot in the instrument with a </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>10 turn 50K precision potentiometer. =
Since it is=20
a 10 turn - I think that</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>just one turn will give me 5K for =
what I=20
need.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>What do you guys =
think??????</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Ken Trager</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial =
size=3D2></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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