Shift light?

[nacelp]

Trouble with homebrew for these are, sometimes the light comes on at say
6,000 rpm, and goes off at 6,100, or flickers at turn on, or goes off at
varing rpm.  Then also, trying to get it to work on a hot and cold day.
Sounds easy, not always so.  I'll kludge with the bestof them, but some
devises are just worth buying the stuff for ie Tach, and oil water displays,
IMHO.
Grumpy
    I had hundreds of hours in a traction control devise that decided to get
nuts at 30dF and below, ya right just needed temp compensation, well, it got
disasemblied, and trashed after another couple hundred hours, and it still
didn't work.  And the hundreds of hours in a conservative figure.  It worked
so well, when warm, and just wouldn't allow the car to even more off of idle
when cold.



> Gavin-
> You and I are on the same frequency. I was going to suggest that IC
> also. You might consider the National Semiconductor LM3914 as a LED
> Dot/Bar driver. IF I read the pdf correctly, one could build a slick
> in-steering wheel tachometer, like a BTCC cars, with both those ICs.
> -Seth
> Gavin wrote:
> > How good are you at electronics???
> > I've been looking through the maplin catalogue(UK) for parts for my
digital
> > dash for my bike.  There is a frequency to voltage converter chip
(National
> > Semiconductor Chip# LM2917N)
> > Then you can set up a row of op-amps, and have a series of LED's ranging
> > from it would be a good idea to change gear soon, to please order new
> > pistons, conrods etc..
> > Also, you can put in a POT and have a variable shift light!!
> > The chip costs £4.
> > If I can help further, please ask.
> >                                                             -Gavin
>I was wondering if any of you guru's have any suggestions for building a
> > >shift light that functions like the overpriced, ugly Autometer units. I
am
> > >working on a custom install and those units are to big.
> > >Thanks,
 > >Scott Bowen


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