<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>And....Interestingly enough.....It does not matter what kind of fancy whopping digital super latest and greatest TX/RX system you have, the signals to the servos are still firmly rooted in good old 1970's technology....:) And...Your super whopper digital brushless whatever servo still has an analog pot for position feedback....:)</DIV>
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<DIV>I for one am eager to see a leap in servo technology.....Bidirectional serial comms to the servos with the servo being able to feed back torque, amps, position, rate, etc.....and encoder/resolver position feedback in the servos to really catch up with the world we live in......</DIV>
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<DIV>Richard <BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Richard Lewis <humptybump@sbcglobal.net><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> General pattern discussion <nsrca-discussion@lists.nsrca.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, June 20, 2009 7:51:32 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] Servo Signals<BR></FONT><BR>
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<DIV>More accurately it is a pulse position signal. The RX sends a beginning pulse that the RX recognizes and then a position pulse at a later time. The time between the start pulse and the position pulse is the absolute position that the servo is commanded to move to.</DIV>
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<DIV>Link to a tutorial:</DIV>
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<DIV>http://www.hooked-on-rc-airplanes.com/servo-tutorial.html</DIV>
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<DIV>Richard<BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Ed White <edvwhite@yahoo.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> General pattern discussion <nsrca-discussion@lists.nsrca.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, June 20, 2009 11:52:22 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] Servo Signals<BR></FONT><BR>
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<DIV>Its pulse width modulation. The pulse length varies from roughly 1.0 millisecond to 2.0 milliseconds in length, with center at roughly 1.5 msec. For a typical radio, the pulse is repeated about 50 times per second or about once every 20 msec (though this can vary quite a lot).<BR><BR>Ed<BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Jay Marshall <lightfoot@sc.rr.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> nsrca-discussion@lists.nsrca.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, June 20, 2009 10:12:24 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [NSRCA-discussion] Servo Signals<BR></FONT><BR>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">I’m sure everyone knows the answer to this – but me. Is the control signal sent from the receiver to the servos analog or a pulse width controlled signal?</SPAN></FONT></P>
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<P><B><I><FONT size=4 face="Brush Script MT"><SPAN style="FONT-STYLE: italic; FONT-SIZE: 13.5pt; FONT-WEIGHT: bold">Jay Marshall</SPAN></FONT></I></B> </P>
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