Re: Project Suggestions???

On Thu, 28 Apr 2005 23:47:52 GMT, the renowned "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 the
>PIC 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.
>
>Thomas Magma

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.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@xxxxxxxxxxxx Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
.

Relevant Pages

  • Re: Project Suggestions???
    ... >>> accelerometer through different mail services to see how your ... >>> switch. ... > Electronic devices are shipped all the time that are running. ...
    (comp.arch.embedded)
  • Re: Project Suggestions???
    ... I always thought a good little project would be to send an accelerometer ... The PIC reads the three axis of the ADXL321s at a rate of lets ... Take the maximum value during a one second period and store it as ... PIC senses the closure of the switch the data is read from the flash and ...
    (comp.arch.embedded)