Freddie Leaf wrote:
>
> I've not been following this thread so forgive me if this has already
> been posted....  I found this link, which has a simple PIC based rocket
> altimeter and other neat rocket projects...
>
> http://www.tfs.net/~petek/projects.html
>
> He uses a MPX4115 pressure sensor and also includes some op-amp signal
> conditioning circuitry to increase the accuracy of the measurement. I
> plan to build a similar circuit but with a 16F877, which has an on-board
> 12 bit A/D converter.  Hope this is useful to you.

 You can find an even simplier design here under Apps/Misc:

 http://www.devrs.com/pic

 Jeff

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