New Carchat 3.02 Coming..

[rr]

Rob,

This is a nifty idea using a PIC to add functionality to the data stream. If
I can add an idea, maybe send the PIC ADC channels at a more
frequent interval than the packet rate. It should be possible to send six
ADC channels between each or every other data byte.

In this manner it would be easy for folks to data log additional information
at a higher rate. It would be very easy to add the TPS, MAP, a WB O2
at a higher rate to the existing data stream.

I can understand that some folks prefer to not use a PIC. However,
they are a good device. (It helps if you know someone that has a PIC
burner. You don't need to know how to program them to use them).

BobR.

Rob Berg wrote:

> I should be uploading a new version of Carchat to the site shortly.  I saw
> a post on doing 160 baud data logging and thought I'd let you know how
> Carchat handles it.
>
> Ver 2.2 doesn't!
>
> The 160 baud data is a non standard data stream that is incompatible with
> RS232 standards.  However ....
>
> V3.02 + an interface circuit does..
>
> I had a lot of requests to log 160 baud data, so I've designed a circuit
> using a PIC16F876 Cpu and a couple of other components to decode the 160
> baud data stream into  a standard Rs232 serial data stream running at
> 19.2K.  It also supports some digital and analog IO from the chip to be
> included in the output data.  The code for running this chip can be
> upgraded without even removing the interface.  I'm also going to release
> the source code (in C) for the interface, so that anyone who wants to play
> with it can.  It doesn't necessarily require carchat, since any program
> with rs232 capabilites can utilize it.  Heck, with a few more lines of
> code, you could build a standalone unit.
>
> I'll upload asap, still need to check on a few things first.
>
> Rob Berg
>
> ----------------------------------------------------------------------------

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org