WB O2 Display, WI

[Bernd Felsche]

David Harris tapped away at the keyboard with:
> WB O2 Display:
> 
> Maybe this is a stupid question since I'm new to the
> list but why not simply use a microcontroller?
> Microchip and Atmel make some pretty cheap (less than
> $20) and capable micros (you could make an Atmel
> programmer for less than $10). You could put the curve
> in a lookup table and display A/F directly. You could
> also output a traditional 0-1V for the stock ECU and
> replace the narrowband O2 completely...

I think this was first suggested about 2 years ago. Definitely more
than a year because it got me "trapped" into the DDL (Direct Digital
Lambda) concept.
	http://bernd.felsche.org/tech/EFI/vapour/DDL.html

Not yet finished ... I'm still struggling to get substantial free
time to dedicate to it. A couple of hours a month isn't enough to
make noticeable progress, being "new" to uC programming and circuit
design.

> This is my plan for one of the weekends this winter.
> If no one else has designed something by then, I'll
> upload it to the server...

Peter Gargano included space for an ATtiny15 on his PCB... if that's
all you want it to do; to produce a mapped signal, then it should be
comparatively straightforward.

-- 
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