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Hi Mark,
RS485 is easy to implement, pretty much like a serial port, and can go up to 4000 feet on a pair of wires. Do a search on this site for RS485 and also on Google and you should be overwhelmed with information. www.Parallax.com has a tutorial for using RS485 chips with the Basic Stamp which is a PIC chip in disguise.
BobK
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I'll check it out. Thanks!
Mark
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Point-to-Point 2km for proper RS232 and that's without line extenders...
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Originally Posted by Melanie
Are you guys (and girls) saying that we can put 2000meters of RS232 cable between two PICs and expect them to see each other on the line?
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"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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At proper RS-232 levels (not at logic levels) yes. If you use unshielded CAT5 cable then a little less. If you want more, use a line extender.
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