Re: Project Suggestions???

For commercial use, I would throw in a MAX6607 temperature sensor . Record
temperature as a byte every minute or two.
If someone could convince me there is a market for such a device, I would
donate my hardware and software skills. Other words...do all the fun stuff
and collect a royalty stream in the end.



"CBFalconer" <cbfalconer@xxxxxxxxx> wrote in message
news:4271A3B5.C8E60F77@xxxxxxxxxxxx
> *** top-posting fixed ***
> Thomas Magma wrote:
> > "Spehro Pefhany" <speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx> wrote
> >> "Thomas Magma" <somewhere@xxxxxxxxxxxxxxxxxx> wrote:
> >>
> >>> I always thought a good little project would be to send an
> >>> accelerometer through different mail services to see how your
> >>> package was being treated. Here is how I would design it:
> >>>
> >>> A PICF676 connected to two ADXL321, a NX25P16, a MAX232 and a
> >>> switch (Energizer L91s and linear reg). The two accelerometers
> >>> are to cover all three axis. The PIC reads the three axis of the
> >>> ADXL321s at a rate of lets say 100Hz. Take the maximum value
> >>> during a one second period and store it as a single byte in the
> >>> SPIFLASH (NX25P16). This will give you data every second for a
> >>> period of about two weeks with a .07 g's resolution. When thePIC
> >>> senses the closure of the switch the data is read from the flash
> >>> and dumped across RS232 to a PC, where you can plot and analyze
> >>> the data.
> >>>
> >>> I would build a couple or so, so you could get a few tests
> >>> running in parallel. I bet the data would be quite interesting.
> >>
> >> Cute. This might violate hazardous materials shipping regulations
> >> IIRC, batteries have to be insulated so no current can flow, and
> >> even then there are other issues. Ran into this with some
> >> quantity shipments by airfreight, but I believe it applies to
> >> mail as well. We ended up have to get chemistry reports on the
> >> (insulated in plastic dry cell) batteries and so on.
> >
> > The transportation specification for the Energizer L91 states
> > "Meets requirements of 49CFR 173.185(b) and IATA special
> > provisions A45." Don't know what the hell that means....but I
> > think they have internal fuses that prevent them from exploding.
> > Electronic devices are shipped all the time that are running.
>
> Even better, I think that is a cheap enough device to be valuable
> as a tracking mechanism with shipments. If received damaged the
> dump, together with the transportation history, should be enough to
> closely establish the point and time of damage, and thus the flaws
> origin.
>
> --
> "If you want to post a followup via groups.google.com, don't use
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>
>


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