This is perfect.... I get more out of these discussions then any one book I own.
Thanks Al
Chris
btw
The circuit I am working on is for measuring the amount of salt in my water softener brine tank and displays the level on a blank switch plate via 8 LED's (see attachment). The circuit uses a Parallax PING sensor, 16F87 for the slave and 16F876 for the master. communication is via RS-485.
If anyone is interested in the specifics, I would be more than happy to share details.
Again, thanks for all the help.
Chris
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