hi to all. i just read the document on XBEE, and says it support around 3 plus volt, in which 8051 microcontroller run at 5volts, but i saw some application directly connecting the UART of the MCU to the XBEE. will it damage the XBEE? and also is there a sample application or circuit connection that will be guide to protect our design? hopefully if succesful, will be using XBEE in all of our application which i think XBee is very flexible.
thank you
this problem is solve, just found out that my micro can work at 3.3v(2.7v-6v).
another question would be, when shall i consider updating the firmware? could i directly use the xbee series 2 that i have now?(i have a xbee S2 and xbeepro S2). could i just make one as a receiver and the other as a transmitter?
As far as updating the firmware of the modules, it really depends what code is on there now. For the ZNet 2.5 modules 1x47 is the current release, and can be found here:
http://www.digi.com/support/productdetl.jsp?pid=3261&osvid=0&s=269&tp=2
If you’re just getting started with your development, you might want to instead consider migrating your modules to ZB firmware:
http://www.digi.com/support/productdetl.jsp?pid=3430&osvid=0&s=365&tp=2
As far as the requirements of either ZNet 2.5 or ZB, you’d need a module with Coordinator firmware loaded on it, and the other could have either Router or End Node firmware. You would then have a very basic 2-node PAN.
Thank you for the reply, i really have hardtime searching for the site on firmware update.
Just have the basic connection.
If you’re just getting started with your development, you might want to instead consider migrating your modules to ZB firmware:
any reason for this? i thought 2.5znet is the new one…
and also, ill just send +++ to enter command mode then ATxxxxx for command, can i use XCTU to simulate all the commands? i did try, after sending +++. its response with “OK”, but after some command(AT) it didn’t response.(or maybe it exited the command mode, before i was able to send AT command?)
The ZB firmware is the newest firmware and is Zigbee Compliant. Yes, you can use XCTU to send the commands in the terminal tab. As for the lack of response after sending the AT commands, it sounds like the module timed out from command mode. If you want to extend the time before timing out of command mode change the ATCT to a larger number. Just remember the parameters are in hex.