Stamp EFI

[goflo at pacbell.net]

Sandy wrote:
> 
> Looks pretty simple, some comments, by no mean anything other then some
> general idea (2Cents)
> 
> One, get one of the standard 8 bit A/D serial converters. Use that for the
> Temp, TPS and MAP.  A four bit converter will only have limited resolution,
> the 8 bit are a dime a dozzen for the pic, and lots of sample software to
> drive them. You can easily get the rate of change in software, not too
> hard, so forget the hardware approach, KISS. Lastly the LM1949 can drive a
> low cost transistor TIP121, etc, no need for the mosfet, and they typically
> don't like the low voltage that could occur while cranking the engin over.
> You could get a logic level FET but even some of them are so-so at <
> 5volts. Check out some of the smart power drivers, ie, IRF6210, built in
> charge pump, protected, and can be driven by most any logic level. Unless
> you are using Peak and Hold style injectors, no real need for the lm1949,
> just get something that can handle a couple of amps and you are good to go.
> 
> Sandy

This mean you're bailing on VT-EFI? I'm bummed.
Jack