Hi !
I really need your help !
I want to know what are the risk to connect 2 captors, 3 servomotors and a Xbee shield to the Arduino Duemilanove (survoltage...)
I can buy the Gator (I have a friend who live in USA) but, if I connect the xBee to the Gator like this schema : http://www.ruggedcircuits.com/assets/images/serialxbee.png
Does it work ?
Thank you for your help !
My guess is that it would work just fine. The Gator manufacturer suggests this setup, blame them if it doesn't. 
Personally I prefer SparkFuns Xbee Explorer Regulated for interfacing with Xbee modules, as I get sockets for the Xbee module, regulated voltage, indicator LED:s and breakout of all Xbee pins, and a pinout compatible with FTDI layout adapters and with SparkFun Arduinos.
I am not sure what risks you are afraid of, nor what the "captors" are.
I am not sure what risks you are afraid of, nor what the "captors" are.
I was going to say it like a “Capacitors, without the aciti”
But can only see 1 Capacitor in the diagram.
Using a zena diode as a clamp that's a different idea, than the voltage divider which is the normal method.
My guess is that it would work just fine.
It will but only because the Gator has some current limiting on the outputs, On a raw arduino board you would need series resistors in line with the zenners.
