Dear Sirs:

For a movementet (position) tracker with contact, I'm using a hall 
effect device that outputs a voltage proportional to the position of the 
target (the way analog joysticks do, centered: half Vdd, increasing or 
decreasing with the "cursor" position. Due to very strong magnetic 
fields, the output voltage could be afected. I've been looking to 
gyroscopes, but they offer an output of relative change of position, not 
the actual position, and also can be affected by magnetism. The solution 
could be resistor joysticks?

If I change to contactless, ultrasonics could be easily affected by 
industrial electrical and magnetically noisy environment (welding 
jobs)?  Optics is too much hi tech for me.

Thank you by your suggestions. Best regards

Luis I.



-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist