555 EFI

[Bruce Plecan]

-----Original Message-----
From: Mike Morrin <mikem at southern.co.nz>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Cc: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, January 16, 1999 4:08 PM
Subject: Re: 555 EFI


>>Okay, who's gonna be the first one to say it would be easiear to skip all
>>the op-amps and use a PIC and some code?  ;) 
>Well I'll be second...


Well then start a thread about it and do something.  The 555 is for
those folks, ie like me who just don't "get it" about code.
With all the talk about Pics/Stamps, it's amazing no one has done
anything with them,  or if they have it's a secret.  
   The list is EFI, and 555 is as valid as anything else.
Hey, how about skip the Pic and go to a CPU, oh what that's 332...

>Actually, I have been musing with the idea of using multiple PICs, each
>with a subset of the funnctionality of the ECU, one doing crank position
>sensing, one doing injection pulse width calculation, one timing and
>driving the injectors (and similar for ignition).  
>The trick being to ensure that each device is only doing one time-critical
>task, so that the worst case timing can be kept under control.
>OTOH, you could just program an 8 pin PIC to behave like an "ideal" 555
>with whatever charactoristics you want...
>regards,
>Mike