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Posted by Joe Strout on March 9, 2007, 5:02 pm
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I guess another approach would be to use a Voltage-to-Frequency
converter, like the Analog Devices AD7740. This only costs about a
buck, and should be easy to use from the microcontroller (using the
PULSIN function to measure the pulse width). It's only a single
channel, but still, for a buck you could buy several. Any comments on
this approach?
Of course that particular chip is a surface-mount chip. I'd vastly
prefer a DIP or SIP. Anyone have a chip they recommend for this
purpose? (Yes, I can wade through Digikey myself; I'm just hoping
someone has a favorite.)
Thanks,
- Joe
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