how to connect inductive sensor to PIC via optocoupler

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betuse

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Dear colleagues,
I am new on this forum,
I need help about how to connect inductive sensor to PIC via optocoupler,
I attach images from optocoupler sch, sensor image (that is NPN normally open type),
I need to drive this sensor with 12 VDC,
thanks
BR
 

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  • sensor.jpg
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  • npn_no.jpg
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Dear collegues, this connection version dont work,
any suggestion?
best regards
 

Hi there,
first, maybe is better for you to test your sensor alone with out mcu,
use for example 9V battery, connect + and -, on the back side of sensor you probably have led indicator, when metal is close to sensor, led will light,
check your black wire and condition when led light,
regards
 

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