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  1. 30-08-2013 #8
    irving2008's Avatar
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    irving2008
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    Whats the supply voltage?

    These are open collector NPN sensors so your BOB must have pullup resistors and the external resistors are not needed.

    Diagram attached shows how to use both PNP and NPN open collector proximity sensors.

    Click image for larger version.  Name: sensor.jpg  Views: 3043  Size: 377.3 KB  ID: 9915
    Last edited by irving2008; 30-08-2013 at 11:52 AM.
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