Something we've been wondering about on newer cars. Is there any interest in a DIYPNP for later drive by wire applications, where the DIYPNP would not control drive by wire? You would either need to do a parallel install keeping the stock ECU, or convert to a cable operated throttle body. But you'd keep the advantage of retaining a stock wiring harness. Would the need to convert to a cable operated throttle or do a more complicated parallel installation be an obstacle here?
FWIW I don't like the response/feel of any of the drive by wire cars I've driven - would be more than happy with a cable but I've been accused of being a luddite
Is there a reason a daughter board to handle the throttle position to stepper motor signal isn't available? I am picturing a pretty simple circuit using a two pots, a microcontroller, a little code to tune sensitivity and some wiring.
Any kid with a set of Mindstorms is halfway there.
Or is this a liability issue?
I'd say that the ability to eliminate DBW is one of the advantages of going to a squirt.
Giant Purple Snorklewacker wrote: Is there a reason a daughter board to handle the throttle position to stepper motor signal isn't available? I am picturing a pretty simple circuit using a two pots, a microcontroller, a little code to tune sensitivity and some wiring. Any kid with a set of Mindstorms is halfway there. Or is this a liability issue?
The biggest reason we don't have this is our R&D department has been busy with other projects. And creating a DIYPNP with a connector that fits a later car will take less time than designing and testing a drive by wire module, especially since we'd want it to safely be able to handle sensor failures and any other issues that may crop up.
In reply to MadScientistMatt:
I get that. I really don't see any affordable options for diy tunable fly by wire drivers... Maybe I ought to step up and make one. I don't see the cable making a big come back.
The trick to issues that crop up is redundancy. Two control systems and a watchdog to make sure the sensors jibe and a separate return system to dump out if the primary fails open... micros and steppers are cheap.
DILYSI Dave wrote: I'd say that the ability to eliminate DBW is one of the advantages of going to a squirt.
I would buy a megasquirt for the sole purpose of eliminating DBW in a car I wanted to "drive".
DILYSI Dave wrote: I'd say that the ability to eliminate DBW is one of the advantages of going to a squirt.
In some cases that's not an advantage - you lose traction control etc without it.
How many asian escorts can one canoe hold?
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