Originally Posted by roadrunninMark
You can use adjustable pressure switches and timers, like "Katfish" did in this link below from cuda-challenger. Starts at "reply #119" and has a parts list of what was used.

http://www.cuda-challenger.com/cc/index.php?topic=84774.105


That's me, I've been running that set-up for 5 years now and couldn't be happier.
Initial tuning took some trial and error, but once I got it dialed in, haven't found a need to change it.
If you're looking for a "programmable" laptop situation, then this wouldn't be for you.