Hi All. I'm considering putting a tachometer in my truck (it's not a diesel, don't worry). I've been searching the archives and I've seen mention of a few designs, but haven't found any working links. Closest I've come is mention of tacho.pdf on Tony Nixon's site that's gone. I seem to remember Neil (picdude) talking about one before. Any links? Thanks, Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu