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I am building a dolly and I am confused as to which proximity sensor to use.

Should I go for M8 or M12 and 5 V or 6-36 V?

What should be the best detecting distance? Should it be 2/4/8 mm. Which one should I select?

1 Answer 1

Tomas Sanladerer has produced a nice video on this topic: https://www.youtube.com/watch?v=il9bNWn66BY

@ 7:31 you see an overview of the precision of various sensors, including the ones you mention. It appears that the M12-4 and M18-8 sensors are more accurate than the M8-8.