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Fighting the DroneCell

Posted by Simon Wunderlin on July 17, 2011 at 3:43am

Hi

 

I seem to be doing something wrong. I have connected a DroneCell to my Arduino Uno for testing, powering it with 5V. RX -> RXI and TX -> TXO.

 

Then I connect to it with screen over the USB cable like this (38400 baud was mentioned in the quick start guide):

$ screen /dev/ttyACM0 38400

 

Starting logging of the screen session (C-A H)

 

Then power cycle the dronecell. I See the TX LED flashing for roughly 1 sec. The output i get is as follows (no further input seems to be accepted, not further output sent):

 

$ hexdump screenlog.0
0000000 ff00 ffff fffe ffff                   
0000008

 

The expected output should look something like this (may vary when no SIM card is inserted):

 

RDY
+CFUN: 1
+CPIN: READY

 

Has anyone an Idea what's going wrong? Am I doin something wrong or might I have gotten defect hardware ?

 

Kind regards,

-S

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Replies

  • Richard August 22, 2011 at 5:16am

    You need to have a server setup from what I am told.... At least the guy who had one working says so...

  • Simon Wunderlin July 19, 2011 at 12:43pm

    This problem is solved. Thanks to Eric (the designer with his quick email support from narobo.com). If you get strange output when connecting the first time enter (try to connect with 38400 baud, if this doesn't work, try 115200):

    AT

     

    Then make sure to disable auto-bauding:

    AT+IPR=38400

     

    Your baud rate is now set to 38'400 baud. You might choose one of these baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.

     

    Cheers,

    -S

    http://narobo.com/
  • Developer
    Andrew Tridgell July 17, 2011 at 3:46am

    did you connect a common ground pin? I initially didn't with my DroneCell and got lots of garbage

     

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