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rf telemetry question

Discussion in 'Electronic Basics' started by Carl Banks, Aug 7, 2004.

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  1. Carl Banks

    Carl Banks Guest

    Ok, here's my situation:

    I have this project where I would like to do some remote sensing of
    16-20 analog inputs, about ten samples per second, and receive it in
    real time on my PC. Don't need much precision; 8 bits is plenty.
    Range is less than 30 feet.

    After reading up a bit, I'm thinking the most straightforward way is
    to use some microcontroller with a digital RF transmitter, say for
    example the rfPIC12C509AF, and an ADC to collect and transmit data
    cyclically to a reciever connected to my PC.

    It's the receiver I'm wondering about. I kind of expected this to be
    a rather typical use for a transmitter (send telemetry to your
    computer), so I kind of expected to see some receievers that I could
    connect to a PC, say via a serial port, obviating the need to build
    one myself. But I can't find any.

    So, can anyone point me to something that does what I need? More
    generally, does this sound like a good strategy? I'm open to
    suggestions.

    In case I've successfully managed to hide the fact that I haven't done
    anything like this before, I'd like to keep it straightforward. I
    have to order all this stuff from scratch. I do know the equations
    very well, but I have hardly any experience actually wiring stuff
    together.

    Thank you for any help,
     
  2. John Schuch

    John Schuch Guest

    Carl Banks wrote:

    --<snip>--

    Do a web search on "RF modems". There are a lot of companies that make
    fairly inexpensive units. You could use a cheaper PIC, and output RS-232
    into an RF modem linked to your PC. As a bonus, your PC could also talk
    to your PIC and do any kind of control you might need.

    http://www.alltheweb.com/search?cat=web&cs=utf8&q=RF+modems&rys=0&_sb_lang=pref

    John
     
  3. Joe Soap

    Joe Soap Guest

  4. Tim Auton

    Tim Auton Guest

    http://www.lprs.co.uk/main/easy-radio.php

    Does exactly what it says on the tin.


    Tim
     
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