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http://www.hackaday.com/category/transportation-hacks/ They have a lot of
fun cheap diy hacks for cars and just about anything!! I think it was the third one
down digital dashboard. Make it display backwards and make it a heads up display
right onto the windshield!! Or put it in your rearview mirror get creative with it.
I see if I can find it and scan it, I have the schematics for a DIY tachometer
using rows of leds or you can do multi colors with a scale(0-4000rpm) with just
the single led lit and bouncing on the scale.
I can't find my schematics so I went hunting and I found this it uses the digit type
display instead of seperate leds like I had, But if you go to radio shack for the parts
of what I had you will be saving some cash by going with this one and it is pretty
compact too. http://www.electronickits.com/kit/co...as/vek2625.htm
I will keep looking around for mine I know I like the bouncing led look better think
like a EQ bounces, It looks cool but it takes alot of leds but is worth it in my opinion!!