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@@ -178,6 +178,12 @@ There is a polarity protection mosfet on the 640 board to protect the motor driv
 
 ## Connecting your RC receiver 
 
+The RC receiver is connected to the 3-pin connector on the far left of the board. Your Radio Control (RC) receiver should be capable of outputting CPPM or PPM-SUM signals. For some RC receivers need a jumper placed across two pins in order to enable this mode (as is the case with the D4R-II receiver displayed).
+
+Once you have your RC receiver connected to the board and bound (linked) to yur RC transmitter, you should run the C++ PPM decoder example code [below](#programming-the-640-installing-the-c-libraries-examples) to make sure that hte signals are being received correctly.
+
+![640 RC receiver](/images/rc640.png)
+
 # Programming the 640
 
 ## Installing the Python libraries
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