Harry H. Arends wrote: > Is there a need for a piece of debouncing check on slow moving HALL > sensors connected to a MCU? Any signal can have noise. It would be a good idea to use hysteresis at least a bit greater than the noise. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist