Hank, Bruce, thats a whole lot of suggestions I can work on to optimize the design. The stress on the low current is, because there IS no battery driving this circuit. Its phantom power tapped off the DSLR's control port as shown here http://www.doc-diy.net/photo/hdr-jack/
Although my app is somewhat different, the powering scheme is exactly as used in the intervalometer project.
I'm going to try everything you guys suggested, one by one, and see if I can get away with using a 12F675 (just beacuse I have a few lying around), and if I cant pare it down enough I guess I'll just have to switch over to an LF part.
BTW, did you notice this guy feeds the Vdd to the controller (Atmel, in this case) thru' the signal pins rather than the proper Vdd pin? Is this desirable/acceptable/reliable? On the pic it did work, but did not reduce the current consumption much.
Will keep reporting back my findings!
Regards,
Anand




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