Also so:

Code:

                                                                 5V ^
               ^ 12V                                                |
               |                                                    |
      +--------+                                                    |
      |        |                                                  o-+--o
      |     o-----o                                               |    |
 100nF|     |  L  |                                               |    |
      |     |  2  |                                               |    |
     ---    |  9  |                                               |    |
     ---    |  3  |                                               |  A |
      |     |  D  |                                               |  A |
      |     o-----o                                               |  V |
      |        |                    +--------------------+        |  V |
      +--------+                    |                    |        |  R |
               |               1nF  |         +----------+        |  R |
               +-----+             ---        |          |        |    |
               |     |             ---        |   |\     |        |    |
            S .-.    |              |         +---|-\    |        |    |
            H | |    |        ___   |   ___       |  >---+--------+    |
            U | |    +-------|___|--+--|___|--+---|+/         ADC |    |
            N '-'                             |   |/              o--+-o
            T  |              10k       10k   |                      |
               |                              |                      |
               |                             ---                     |
               |                             --- 1nF                 |
               |                              |                      |
               |                              |                      |
      GND  ----+------------------------------+----------------------+


(created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)

Fehlt sonst noch etwas oder kann man noch etwas verbessern?

lg christoph