|
The
Camera
We
chose a Kodak DC20 camera, which you can
buy in every electronic store for about DM300.-. Because this camera is
one of the first digitals, you will also get it second hand, as we did.
The
camera normally works with a 3V lithium battery and is able to store up
to 16 pictures in its internal flash memory.
For
downloading the pictures into a computer the camera provides a normal RS232
interface, |
 |
The
Modifications
First
an external 3 volt powersupply was built using a LM 317 voltage
regulator. This regulator was placed on a little PCB right next to the
camera. As you can see we are using a little sheet metal for cooling the
electronic component. This sheet metal is our aircondition because
in normal operation its temperature is +25°C. So when the camera is
installed outside in a box this prevents it from freezing (don't lough
you really have to care for such things!).
Further
we modified the camera's powerswitch, so that the camera automatically
switchs on after connecting the power supply.
|