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PICList Thread
'Car tach'
1998\03\09@153540 by Allen Demers

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    Hello to all.  I am VERY new to the pic enviornment!  Pretty much a
novice in the electronics in general.  But i think I can learn this :). I
am trying to gather Ideas and data for building a digital tachometer for my
car.  I plan on using the 16c84 for economical and technical reasons (I can
electronicly fix my mistakes! no uv needed).  If any one has any guidance
on electronic design of the Tach I would much appreciate any input.
    I was thinking I would probably use either the pos coil wire as the
signal(reduced of course) or an inducted sparkplug wire via halleffect
pickup.  I would like to get resolution of about 50 -100rpm which I would
like to output to a four character led display(7 seg).
       I plan on using some sort of c/compiler for the programming because I
am not very familiar with assembly code.  Any good beginners links would be
appreciated.

Thanks in advance,
Allen

1998\03\09@193006 by TONY NIXON 54964

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Hi Allen,

Try the link below if you wish to learn in a fun way, how to program
the 16F(C)84.

If you can display a gif file I can send you a schematic, which shows
one way to connect a car coil to a PIC input.

Regards

Tony

PicNPoke Multimedia 16F84 Beginners PIC Tools.

PicNPoke - PicNPlay - PicNPlan - PicNPrep - PicNPost
Plus DT type saver.
New addition - PicNPort I/O Tutor.

http://www.dontronics.com/picnpoke.html

1998\03\12@204239 by wayne galaugher

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TONY NIXON 54964 wrote:
>
> Hi Allen,
>
> Try the link below if you wish to learn in a fun way, how to program
> the 16F(C)84.
>
> If you can display a gif file I can send you a schematic, which shows
> one way to connect a car coil to a PIC input.
>
> Regards
>
> Tony
>
> PicNPoke Multimedia 16F84 Beginners PIC Tools.
>
> PicNPoke - PicNPlay - PicNPlan - PicNPrep - PicNPost
> Plus DT type saver.
> New addition - PicNPort I/O Tutor.
>
> http://www.dontronics.com/picnpoke.html
Hi Tony

EPE magazine at http://www.epemag.wimborne.co.uk has a whole article
with code for a pic based car tach.

Good Luck
spam_OUTwaynegTakeThisOuTspamican.net

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