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Wireless RS232

M

max

Jan 1, 1970
0
Anyone know of a simple circuit for a wireless RS232 link?
 
J

Jeff Liebermann

Jan 1, 1970
0
Anyone know of a simple circuit for a wireless RS232 link?

Sure. However, it would be nice if you specified some details:
What speed?
What range?
Will you have line of sight?
Full or half duplex?
Any environmental issues?
Can it be run by RS-232 power or can you supply power?
Whatever else I forgot?
 
M

max

Jan 1, 1970
0
Both ends would be connected to pcs with the following specs...
Baud 9600+
Range 20-30 metres
Not necessary line of site
Full duplex
Powered from separate supply but could be from the pc...
 
J

Jeff Liebermann

Jan 1, 1970
0
Both ends would be connected to pcs with the following specs...
Baud 9600+
Range 20-30 metres
Not necessary line of site
Full duplex
Powered from separate supply but could be from the pc...

http://www.robosoft.fr/SHEET/07Wireless/1001RS232/RS232.html
http://www.web-ee.com/Schematics/WirelessWeather/WirelessWeather_files/transceiver.gif
http://www.radio-tech.co.uk/radio-modem.html

Just about any manufacturer of 433MHz and 915MHz "radio modem" chips,
will have an application note on using their products. Try Atmel,
Motorola, Micrel, TI, and RFMD will have app notes. Oh, here's a
shopping list (near the bottom):
http://www.radioinnovation.com/module.htm
There are also a bunch of 433 and 915MHz "module" manufactories. See:
http://www.rfdigital.com
Linx modules are a good start. Carried by Digikey.
http://www.linxtechnologies.com/ldocs/main.html
http://www.linxtechnologies.com/ldocs/f_applic.html
This looks good:
http://www.linxtechnologies.com/ldocs/pdfs/AN00134.pdf
 
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