rf telemetry question

Aug 07, 2004 3 Replies

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

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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.

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John

In response to what John Schuch posted in news:_64Rc.12012$ snipped-for-privacy@newsread2.news.pas.earthlink.net:

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Joe Soap. JUNK is stuff that you keep for 20 years, then throw away a week before you need it.

snipped-for-privacy@aerojockey.com (Carl Banks) wrote: [snip]

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Does exactly what it says on the tin.

Tim

Google is not the only search engine.

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