Re: Palm Pilot software for E-Meter

[Mike Thompson <mikt@pair.com>]

On Sun, 30 Sep 2001, Mike Chancey wrote:

> This Palm Pilot software looks like a really neat idea, though I can't see
> as it does all that much more than the E-meter alone.  As I have mentioned

Look at the features of Peter's EV1 Dash. It evolved over time. Also when
he posts the source code other's can extend it. Minimally, logging could
be added to it, even intelligent logging where the data is compressed to
extend the logging time.

> before what I would like to see is a way to tie together the E-meter data
> and a speed/distance signal from the EVs speedometer.  I was just checking
> the Honda manual and found the speed sensor on my Civic generates four
> pulses per revolution of the speedometer cable.  Once corrected for number
> of pulses per mile this could easily be used to generate both speed and
> distance.  Combine that with the E-meter data and you could have
> watthours/mile, range to empty (full discharge) at current rate, avaerage
> distance per cycle, and many other such useful functions.  Has anyone ever
> tried doing something like this?

Get fancy about it and add GPS. Then you can review the actual route and
possibly get eleveation data as well.

> On a side note, as I am not a Palm Pilot owner but was considering looking
> into an older one to try this kind of thing on could anyone recomend a
> specific model for this kind of application?  Ebay seems full of the things,
> but there seems to be a zillion versions.

Anything with a serial port. You might be able to use / adapt a USB model
but I don't know how yet.

2MB of ram in a PALM is quite abit. If you want to do some really fancy
logging for a long time, you might use more memory. The ones that can be
recharged are interesting to prevent having to use batteries. Or modify
one of the non-rechargeable ones to accept power.

> Thanks,
>
> Mike Chancey,
> '88 Civic EV
> Kansas City, Missouri
> EV List Photo Album at: http://evalbum.com
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>
>

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