XBee Series 2 radios will not talk to one another

Projects Networking, Protocols, and Devices
1

Hi!

I have a couple of series 2 XBees, and I'm just learning to use them now. I had them working at one point, but yesterday I plugged them in to a couple of these (Sparkfun XBee Explorer Regulated) - same setup as before - and they refuse to work.

What I'm doing is very basic - on one end, I want an LED to light up, and on the other, I want an LCD to print the XBee's output (just Serial.print()). I've written code to achieve this. However, the code does nothing because the XBees will not communicate with each other. I know this because the DOUT LEDs are constantly lit up, indicating that they're sending something, but the DIN LEDs do not light up.

They're configured as a pair. One is set to be a Coordinator (AT) and the other is set to be a Router (AT). Both are set to the same PAN ID. The destination address on one is set to the serial of the other, and vice versa.

All the wiring/soldering is fine; I tested the wires with a multitester set to continuity. I also reset both of the XBees to factory defaults and re-entered the settings, to no avail.

Can anyone point out something I could have missed?

Thanks!

2

Take a look at my blog http://www.desert-home.com/p/world-of-xbee.html#Problems, I had this happen so many times it flat drove me nuts. If this doesn't help, post again.

3

Is the firmware updated on both the bees?

4

Yes, I used XCTU to load them and them both for Zigbee with a modem type of XB24-ZB. Of course one was a router and the other was a coordinator.