Hart protocol

May 24, 2005 1 Replies
D

Shove it into an Apple IIe game paddle port and record the sucker.

Worked like a champ to find the obscure Radio Shack temperature codes.

Many thanks, Don Lancaster Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 voice: (928)428-4073 email: don@tinaja.com Please visit my GURU\'s LAIR web site at http://www.tinaja.com
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P

Does anyone know where I can find out more about this without a major outlay? Our shop has several instruments that communicate with it, but the official keeper of the documentation,

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(a "non-profit" organization, har har) wants $775 for it. The hardware is trivial, just 1200 baud modem tones riding on a 4-20 mA current loop, and all we need is the basic syntax and a few commands.



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