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wireless stingray — Parallax Forums

wireless stingray

RNRN Posts: 28
edited 2010-03-30 20:00 in Robotics
Can anyone tell me how to make stingray wireless and do the communication business. i posted a question earlier on sensors forum but i am not getting the right answer. Stingray people haven't given any Rx and Tx output then how to connect the xbee module to it.

Thanx.....

Comments

  • SRLMSRLM Posts: 5,045
    edited 2010-03-29 13:50
    Your earlier threads:

    http://forums.parallax.com/showthread.php?p=892700
    http://forums.parallax.com/showthread.php?p=892705

    For the stingray, just solder in the 3.3 volt headers (as detailed in the documentation), and use those like any regular propeller pin.

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  • RNRN Posts: 28
    edited 2010-03-29 14:07
    I want to know about the receive and transmit pins connection. Should i solder it to the propeller chip or their is an alternative. And that's why i have moved to this forum
  • SRLMSRLM Posts: 5,045
    edited 2010-03-30 03:30
    All I'm saying is that the information is out there if you want to take the time to find it. As to your question, I suppose that you could solder the XBee directly to the Stingray control board, but that would be both difficult to do and to change. A better solution would be to solder in the 3.3v headers (see the Stingray documentation), then use cables to connect to those headers to the breadboard, and put the XBee on the breadboard by using an adapter board.

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  • RNRN Posts: 28
    edited 2010-03-30 08:27
    I am still not getting the answer. I dont have problem connecting the 3.3v and gnd. propeller chip has 30 and 31 pins as Rx and Tx. these should be connected to XBEE dout and din. How to connect them as they haven't given any OUT for the two pins. Should I coonect the two using wires with soldering at the propeller end or their is any other method.
  • Roy ElthamRoy Eltham Posts: 3,000
    edited 2010-03-30 15:57
    You do not need to use port pins 30 and 31 on the propeller for the xbee. In fact, it is recommended that you do not use them with the MSR1 controller board on the Stingray. The MSR1 board has port pins 0 through 23 available for using with sensors and other devices. However, since the xbee modules uses 3.3v signalling for rx/tx you can't connect it directly to the servo header pins since they are level translated to 5v. You should probably bypass one of the level translators on the MSR1 board. This can be accomplished by installing the jumper pins and header pins into the proper places on the MSR1 board.

    You can use any of the available port pins on the Propeller for doing rx/tx with the xbee. When you use the code available on the OBEX to interface wsith the xbee you tell it which port pins to use for rx/tx.

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    Check out the Propeller Wiki·and contribute if you can.
  • SRLMSRLM Posts: 5,045
    edited 2010-03-30 20:00
    All pins on the propeller chip are identical once the chip is started.

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