Standalone XBEE : how to?

Hello,

I am new to Arduino and XBee and facing this problem :

I succeeded in mounting an XBee S2 module on an Arduino via a XBEE shield, that is sending some text to another XBee plugged to PC via a usb adapter. An image here (sorry for the quality) :

http://3.bp.blogspot.com/-pKn9fz8G64o/U … .56.08.jpg

As you can see :

  • on the bottom is the usb adapter : left led is RSSI (signal) indicating that there IS a signal incoming. Middle led is Associate led, blinking (seems ok). And on the right, the RX led : I can receive the text sent from the arduino

  • on the top : standalone arduino (with 9V battery) simply looping on : Serial.println(“hello”).

So with this, I can monitor (in X-CTU) the received data from usb adapter… Cool!

But now I want my sender Xbee to be standalone too, only power supplied by battery and sending temperature info. So I just unplugged it from the arduino and plugged it to a simple board as illustrated here :

http://2.bp.blogspot.com/-Vq6aiTIx594/U … .01.02.jpg

But as you can see, only Assoc led is blinking and nothing more happens… The sender XBee never communicates (send a signal) to receiver XBee, and I do not figurate why??? What did I miss? I read that only VIN and GND is needed by the XBee…

(Here temperature sensor is not plugged since I just try to get a signal between the modules)

Thanks for the help!