<div dir="ltr">I looked into this myself a while back. One of the more popular RC protocol families is Spektrum DSM2 and DSMX. Apparently it's been completely reverse engineered and there are example implementations out on the net. The official radios are based on the Cypress CYWUSB6953 PSoC+Radio chip.<div><br></div><div><a href="http://datasheet.octopart.com/CYWUSB6953-48LFXC-Cypress-Semiconductor-datasheet-17723564.pdf">http://datasheet.octopart.com/CYWUSB6953-48LFXC-Cypress-Semiconductor-datasheet-17723564.pdf</a><br><div><br></div><div><a href="http://www.cgsy.com.au/archives/215">http://www.cgsy.com.au/archives/215</a> discusses the DSMX protocol<br></div><div><br></div><div>This post in a larger thread has links to a bunch more info: <a href="http://www.rcgroups.com/forums/showpost.php?s=07273ba7d35902817e79bbdf30110409&p=7916481&postcount=6">http://www.rcgroups.com/forums/showpost.php?s=07273ba7d35902817e79bbdf30110409&p=7916481&postcount=6</a></div><div><br></div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 20, 2015 at 2:26 PM, Alex Fraser <span dir="ltr"><<a href="mailto:beatnic@comcast.net" target="_blank">beatnic@comcast.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<font face="Comic Sans MS">It used to be that in radio control you
picked a frequency for your transmitter and for your receiver.
There were channels on 6 meters and at 72 and 75 MHz. You depended
on being the sole user of a frequency to guarantee that you were
in control. Back then you would tie a ribbon to your antenna
which told every one which channel you were on so no one would
accidentally jam your signal and cause you to lose control</font>.<br>
<br>
These days the frequency used has has changed to 2.4 gig. You turn
on your receiver and your transmitter and Bind them. The
Transmitter handshakes with the receiver and they create a unique
link. Everyone using the field can use the same band and the radios
don't interfere with each other.<br>
<br>
There has been some threads on this reflector about spread spectrum
(ha, an understatement for sure!) and recently been some talk on
syncing signals. I wonder if folks here have looked at what is
happening with modern RC radios? BTW as I understand it these new
transmitters have flash-able bios and considerable programing
capability so there is a possibility of re purposing the gizmo.<span class="HOEnZb"><font color="#888888"><br>
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