Boopidoo:
Thanks for the suggestions and ideas. For me I guess a normal pot would be ok since I only need to. Switch between 2-3 pages.Now the next question. Can I use a digital (pwm) pin for this? This can be made to know what position the pot is right or do I need an analog pin?
What type of pin should I use for a rotary encoder?
A digital pin used in PWM service is an output pin, it could not be used to 'read' anything. Reading something is an inputting function for your arduino board. An analog pin must be used to read a pot because a pot is only capable of generating a variable DC output voltage to be wired to a analog input pin. A rotary encoder needs to use two digital input pins and depending if you want to use interrupts to service the encoder or not you may be limited to using digital pins 2 and/or 3.
Lefty