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="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<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 size="2" face="Arial">Ed</font></div>
<blockquote style="border-left: 2px solid rgb(0, 0, 0); padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">----- Original Message ----- </div>
<div style="background: rgb(228, 228, 228) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
<b>From:</b>
<a title="bob@toprudder.com" href="mailto:bob@toprudder.com" target="_blank">Bob Richards</a>
</div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; 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-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Sent:</b> Friday, November 21, 2008 9:42
PM</div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Subject:</b> Re: [NSRCA-discussion] Futaba
R6014FS Receivers</div>
<div><br></div>
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<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="border-left: 2px solid rgb(16, 16, 255); padding-left: 5px; margin-left: 5px;">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 size="2" face="Arial">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 size="3" face="Times New Roman">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 size="2" face="Arial"><font size="3" face="Times New Roman"></font></font> </div>
<div><font size="2" face="Arial"><font size="3" face="Times New Roman"><font size="2" face="Arial">Mike</font></font></font></div>
<div><font size="2" face="Arial"><font size="3" face="Times New Roman"><font size="2" face="Arial">NSRCA 35</font></font></font></div>
<div><br></div></div><pre>_______________________________________________
NSRCA-discussion mailing list
<a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></pre></blockquote></td></tr></tbody></table>
<p>
</p><hr>
<p></p>_______________________________________________<br>NSRCA-discussion
mailing
list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></blockquote>
</div>
<br>_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br></blockquote></div><br><br clear="all"><br>-- <br><br>Keith Hoard<br>Collierville, TN<br>
<a href="mailto:khoard@gmail.com">khoard@gmail.com</a><br><br><br>