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  1. #1
    Student
    Join Date
    Mar 2017
    Location
    Scotland
    Posts
    3

    Question CTC prusa i3 pro B Auto bed leveling

    Hi all has any one ever fitted this printer with a probe like this LJC18A3-H-Z/BX 1-10mm Capacitance Proximity Sensor Switch NPN NO DC 6-36V 300mA
    if you have can you please help a novice who is stuck i have fitted the sensor to the printer and i have wired it but on the signal wire i get 0 volts that can't be correct I thought i would need at least 5 volts i just don't know what i have done wrong.

  2. #2
    Technologist
    Join Date
    Apr 2016
    Posts
    114
    So long as you have the polarity correct, then yes I agree, you should see a voltage when at the correct height. Are you using the resistor method to connect to the Z stop and have you connected it correctly?

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