[simpits-tech] Servo Feedback
Ken Trager
simpits-tech@simpits.org
Thu, 30 Jan 2003 10:03:57 -0800
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Greetings all
I am thinking ------ so let me throw out my idea
A servo from model airplanes run 90 or 180 degress - - - - right (for =
the MiniSSC)
The motor drives a feedback potentiometer of 5K - the motor will drive =
till it is=20
null out and the motor stops turning.
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
Guess what - - - - It worked!!!!!!
Here is the problem -
My Radar Altimeter needs 350 degress of movement for the neddle.
Now I know I can gear it to move 350 degress but that would be jumpie to =
much.
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.
What do you guys think??????
Thanks
Ken Trager
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<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 degress=20
- - - - 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 =
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 5K=20
pot in the instrument with a </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>10 turn 50K precision potentiometer. =
Since it is a=20
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>
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