Re: [CAD_CAM_EDM_DRO] Quadriture encoders, Limit switch debounce

David G. LeVine wrote:

>Need a not-so-simple explanation of how these work? In the DIY-CNC
>photo albums under "DGL stuff" there are three pages of stuff. Enjoy!
>
>

Here's one :
http://www.timgoldstein.com/cad_cam/quadratr.htm

As for debounce, I'm not sure you really need such a feature on limit
switches, but
debounce means to eliminate the rapid on-off action as switch
contactsare just opening
or closing. Due to springiness of the contacts or vibration, the
contacts make and
break contact often hundreds of times. Usually some sort of
resistor-capacitor
delay is used, although digital circuits or even software can be used to
do the same.

Jon