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<DIV><FONT face=Arial size=2>Contacting mfgs might help, however I would not
assume that because a servo is recently manufactured, it is good to go with a
minimal input level. Typically, you pick a chip and you use it for a good,
long time. My baseline assumption until otherwise proven would be that
whatever JR came out with with the advent of their digital servos is still being
used. There's no economic reason to change it. Also, there is
definitely no advantage to being able to work with lower input levels in our
application. The lower the signal threshold is that the servo will respond
to, the more likely it is to respond to spurious signals (noise). Your
mileage may vary.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=khoard@gmail.com href="mailto:khoard@gmail.com">Keith Hoard</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, November 22, 2008 8:45
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Futaba
R6014FS Receivers</DIV>
<DIV><BR></DIV>I think all of the recently manufactured servos are made to
work fine with the lower signal voltage. I would just contact the
manufacturer. . perhaps easier than designing a " simple
buffer"?<BR><BR>
<DIV class=gmail_quote>On Fri, Nov 21, 2008 at 11:00 PM, Ed Alt <SPAN
dir=ltr><<A
href="mailto:ed_alt@hotmail.com">ed_alt@hotmail.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV bgcolor="#ffffff">
<DIV>Aside from using a purpose built servo that matches logic families with
the receiver, the only real solution is to insert a level translater in
between; basically a simple buffer that allows you to take a lower voltage
ourput signal from one logic family in the receiver and boost the signal
level to work with a servo that requires higher levels for safe operating
margins. Personally, I would not fly other servos without doing this,
even if they seem to be working fine. Jim Oddino's post
used two very instructive words: "ragged edge". </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Ed</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(0,0,0) 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal">-----
Original Message ----- </DIV>
<DIV
style="BACKGROUND: rgb(228,228,228); FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial"><B>From:</B>
<A title=bob@toprudder.com href="mailto:bob@toprudder.com"
target=_blank>Bob Richards</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>To:</B>
<A title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org" target=_blank>General
pattern discussion</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>Sent:</B>
Friday, November 21, 2008 9:42 PM</DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>Subject:</B>
Re: [NSRCA-discussion] Futaba R6014FS Receivers</DIV>
<DIV><BR></DIV>
<TABLE cellSpacing=0 cellPadding=0 border=0>
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<TR>
<TD vAlign=top>
<DIV>I think I read somewhere that the R608FS receiver uses the same
chipset and has the same problem.</DIV>
<DIV> </DIV>
<DIV>So far I have not had any problems with the servos that I use,
but I was not able to check the pulse width out of the
higher channels with my Hitec programmer. I have to wonder, however,
exactly what is the logic level for the various servos? Also, does
the logic level of the servo change with a different battery
voltage? Does the output level from the rx change with a different
battery voltage?</DIV>
<DIV> </DIV>
<DIV>I guess this is a good reason to use some sort of output
conditioner (powerbox, etc) if mixing brands of receivers and
servos.<BR></DIV>
<DIV>Bob R.</DIV>
<DIV> </DIV>
<DIV><BR>--- On <B>Fri, 11/21/08, MKMSG <I><<A
href="mailto:mkmsg@cox.net"
target=_blank>mkmsg@cox.net</A>></I></B> wrote:<BR></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid">From:
MKMSG <<A href="mailto:mkmsg@cox.net"
target=_blank>mkmsg@cox.net</A>><BR>Subject: [NSRCA-discussion]
Futaba R6014FS Receivers<BR>To: "NSRCA Discussion List" <<A
href="mailto:nsrca-discussion@lists.nsrca.org"
target=_blank>nsrca-discussion@lists.nsrca.org</A>><BR>Date:
Friday, November 21, 2008, 1:15 AM<BR><BR>
<DIV>
<DIV><FONT face=Arial size=2>I was reading the FAQ section of the
Futaba website when a particular item caught my eye regarding the
R6014FS 2.4 receiver. The FAQ states that <FONT
face="Times New Roman" size=3>the use of non Futaba digital servos
with the R6014FS receiver may be problematic due to the 6014's
lower output voltage of 2.7 volts. Since I do occasionally
mix and match Futaba and JR servos and use the 8 channel 2.4
receiver, I wondered if this issue was common to all Futaba 2.4
receivers. Here's Futaba's answer: "The FAQ refers only to
the R6014FS receiver, this is the only one that has the lower
voltage." Just thought I'd pass this along in case someone
experiences performance anomalies with the 6014 receivers using
other than Futaba servos.</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3><FONT face=Arial size=2>Mike</FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3><FONT face=Arial size=2>NSRCA 35</FONT></FONT></FONT></DIV>
<DIV><BR></DIV></DIV><PRE>_______________________________________________
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clear=all><BR>-- <BR><BR>Keith Hoard<BR>Collierville, TN<BR><A
href="mailto:khoard@gmail.com">khoard@gmail.com</A><BR><BR><BR>
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