Using RN-XV wifly module for telemetry (iPhone / Android)

Posted by Ryan Rasmussen on December 11, 2012 at 11:02am

Hello everybody,

For my senior design project I'm working on a simple phone ground station for an ArduCopter.  Our project sponsors want us to use an RN-XV wifly module but we're not sure how to connect it to the telemetry port of our APM 2.5.  We've tried using a regular 2.4 GHZ Xbee but we are having problems with that.  

We are currently using a sparkfun Xbee explorer for the Xbee but its not working properly and we're not sure why.  In order to connect the RN-XV, will the xbee explorer work or the xtreambee adapter?  I am a computer science major so the electrical stuff is a little over my head.  Any help would be appreciated.

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Replies

  • Tommy Larsen January 7, 2013 at 12:11am

    Hi

    I havn't read all the feedbacks in this thread, but i'm using this chip myself and it works perfect without any code change. I connect this to an onboard 3g wifi router and use MP with TCP or UDP.

  • OG December 12, 2012 at 10:32am

    no CTS only tx  rx & power if your having issues change 2.4 xbee aroud 

  • OG December 12, 2012 at 9:08am

    I am bridging serial between RN-XV  &  2.4 xbee. sorry to hear about your xbee explorer issue. But I think you may be being misled !! because if you had a regular xbee would it work with xbee explorer?? if so the RN-XV will? YES!  you do not have the necessary equipment to trouble shoot the problem? I  for example the red green LED should blink if data is being sent & received.  Why don't you see data in the terminal window? do not put any faith in what you read or what some one tells you trouble shoot & investigate for your self if you can. if you do a search you  will find the my ground station code.

  • OG December 12, 2012 at 8:21am

    TCP & UDP WORKS Well!! I use this with my APM & mission planer but not directly connected to the APM. you need to run code/librery to initialize serial communication with RN-XV. if you read the documentation you would know that. APM dose not support this. Simply connect it to the APM  if you get any data in terminal window over TCP or UDP??

  • zach w December 12, 2012 at 4:23am

    Hello Ryan,


    I've used a RN-XV Wifly module with XBee Explorer regulated: https://www.sparkfun.com/products/10822 and https://www.sparkfun.com/products/9132

    Together they have a problem, described in the comments on the sparkfun WiFly product page. Comments by user "M-Short" in particular. XBee has a pull-up resistor on the uart rx but WiFly does not. The result is Wifly not receiving serial input when used with Xbee explorer regulated. Does this sound like your problem? The solution is to add a pull-up resistor to XBee explorer regulated. Attached picture shows where I put mine.3692564777?profile=original

  • OG December 11, 2012 at 11:31am

    last time I checked this module does not work with the APM directly. code modification would be requierd. the work around was to use an Xbee or bluetooth module as a brig from the tlemety port to the  RN-XV module. 

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