On Sun, Dec 7, 2008 at 10:47 PM, 4e fte <4eftefj@gmail.com> wrote:
> hi there, i am new here. i have a project idea in mind that i would
> like to develop. my knowledge of pic programming/interfacing is basic
> so i should understand the input u fellas give to me.
>
> ok, this is what i have in mind:
>
> use a pic to control an injector via pwm to supply more fuel for a
> turbo upgrade. the input would be the ignition signal (rpm). i would
> program different duty cycles at different rpms to supply varying
> amounts of fuel.
>
> these are the following questions i need to start of:
>
> 1. how would i interface the ignition signal to the pic, the hardware part?
> 2. what pic would be the best? i already have pic10f202. would it be
> ok to use this? i really want to.
> 3. how do you "detect" 1 rpm with a pic?
>
> i don't want to use pics with pwm built-in, as i believe that would be
> too complicated for me. i want to keep the circuit as compact as
> possible so if i can use the 10f202, all the better.

1. What do you mean?

2. 10F, 12F, 16F are all very suitable for this. It would be ok to use
the 10F you already own if you could fit your code onto it. 10F has
very little code space. Also, what will you be using, C or assembler?

3. What hardware are you using to count your RPM? How is it reporting
data? (I assume RPM means revolutions per minute in this situation).


-- 
..::[ solarwind ]::..
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist