DIY Computer Interface to HF cheapo Caliper?

The Harbor Freight digital calipers got down to $12, so I sprung for one. Only took three tries to get one that worked. This is the best example of "no-name" I've ever seen. Only clue to what it is is "made in china".

I'd like to experiment with transferring data to the computer. Has the 4-pin interface. Googling spc has let me down. Anybody have specs on the hardware interface and data format. Please save me the hassle of getting logic analyzer out of the attic.

Thanks, mike

Reply to
mike
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Try

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and search for SPC

Reply to
Rick

Figures. Oh well-he still may be able to pick up a few things...

Reply to
Rick

The China caliper output is not the same as Mitutoyo.

Best regards, Spehro Pefhany

Reply to
Spehro Pefhany

Try this URL: href="

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Reply to
keith bowers

Reply to
Greg

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" Thanks guys, for the links. Found lots of (hopefully) useful data. mike

Reply to
mike

Mike, go to this site

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the most thorough info on this subject. Have fun, Fred

Reply to
Fred Splittgerber

On Mon, 29 Nov 2004 15:32:15 -0800, mike scribed:

Hi Mike:

I don't know how far along you got, but this guys site has it all, even how to build a DRO unit with 3 axis inputs and a spindle RPM unit, complete schematics, PCB layouts, micro assembler code, etc...

Good luck!

Fred III

Reply to
Fred Fowler III

Fred Fowler III offered...

Which guy's?

Jim

Reply to
Jim Wilson

He's talking about the Shumatech site below.

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-- J. Mark Wolf

Reply to
J. Mark Wolf

On Fri, 17 Dec 2004 20:46:44 +0000, J. Mark Wolf

Also found one here:

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Best,

Fred

scribed:

Reply to
Fred Fowler III

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