Hi schlaray,
Why don't you look at using one of the 12F series PICs as they are small. I'm assumming here that all you are looking for is creating a one shot timer. You could create a clock using the internal timers and have a serial display showing how much time has elapsed. You have 6 I/O pins to work with on the 12F series. Look at data sheets for one with an A/D input then go from there. I think one with 1K of memory should do the trick for you. Search this forum for Paul Borgmier's "Easy Clock" programs to see just how easy it is to create a clock with a serial display. I think what you're asking to do should be relatively simple to make. You could use one button to set the time period to whatever time you wantand the same with how long of a pulse you want to have. Setup a small menu program to select these times then have your display show you are "waiting for an activation". See how an imagination can run wild. That's what I like about this stuff. It gets the creative juices flowing, even on a Sunday!
Have fun!
BobK
Chuck Helebuyck has produced some articles in Nuts and Volts Magazine this year that show you how easy it is to use timers and interupts. There also some great sample programs on the MELabs website.
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