rf telemetry question

C

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,


--
CARL BANKS
 
Carl Banks wrote:

--<snip>--
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.
--<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
 
In response to what John Schuch <news@esdres.com> posted in
news:_64Rc.12012$cK.6891@newsread2.news.pas.earthlink.net:

Carl Banks wrote:

--<snip>--
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.
--<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_l
ang=pref

John
http://www.pacscom.com

--
Joe Soap.
JUNK is stuff that you keep for 20 years,
then throw away a week before you need it.
 
imbosol@aerojockey.com (Carl Banks) wrote:
[snip]
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.
http://www.lprs.co.uk/main/easy-radio.php

Does exactly what it says on the tin.


Tim
--
Google is not the only search engine.
 

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