On Mon, 2010-09-27 at 10:42 -0700, Mike Payson wrote:
> Not technically a PDA, but this would be easy to install in a pendant and
> should do everything you need:
>
> http://andahammer.com/mini3/?PHPSESSID=c47b0c96938c86847ccf80119dab7d42
>From my brief look at it, it looks ideal (34 GPIO pins, yea). I would be
mounting it, or the display at least, at the focal point of a lens of
the same size as the display area. This will project the image up to a
clear glass panel, tilted 45 degrees to the telescope view. The user
looks straight through the glass to see stars and also the reflection of
the screen.
(eye) < \ (glass)
(view of screen and star) \
<==> (lens)
[--] (screen)
---------------------------- *
| (telescope) | (star)
| |
----------------------------
/|\
/ | \
/ | \
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA
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