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SPI interfacing - How long can external connections be?


 

Hi Guys,

Having lost enough hair trying to get i2C working with BASCOM, I
dropped it and switched to the SPI interface. Got that working
within a couple of minutes as opposed to countless hours getting
nowhere with i2C.

Anyway, being new to SPI, I don't know what the limitations are for
it. I would like to have the SPI master in a sepperate cabinet from
some of the SPI slaves. I am guessing the total cable length would
be about 3 feet - shielded cable if that maters.

I will try a test on the breadboard (yes, I am doing this on a
breadboard :-)). But I would also like to hear if there are any
cautions etc.

Thanks guys

Chris

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