Post by thread:Car tach

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

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

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_OUTwaynegTakeThisOuTican.net