Hello ! I'm using inductive proximity sensor( NPN 6 to 36VDC 300mA 4mm) to detect metals. I connect an arduino uno (powered by my pc) with the sensor(power with 9v). I write a code that show me if metal is detected or not. Unfortunately it seems that even if nothing is detected the code is still r…

I'm working with inductive proximity sensor( NPN 6 to 36VDC 300mA 4mm). I just use the PIR to build a schematic because PIR has the same terminals than my sensor

Well, what is the exact model of the inductive proximity sensor?

Inductive Proximity Sensors NPN

The sensor outputs a LOW signal when it detects metal, and 6v isn't compatible with arduino without a resistor or logic converter.

As a newbie :sweat_smile:, I only understand the suggestions. what do I have to do?

[image] christiandebadolo: I only understand the suggestions. what do I have to do? Provide a lot more specific information, that we may help.

Hello ! I'm trying to connect 4 inductives proximity sensors NPN with my arduino uno. I already make connect with 1 sensor according to this schematic [image] How can I complete the assembly ? May I use a other components like resistors, etc?

Your schematic shows a PIR (passive infrared detector) - that's not "inductive".

Inductive proximity sensor

Other Hardware Sensors

Paul_KD7HB May 11, 2023, 12:51pm 12

Good schematic, but there is NO connection of PIR ground to the Arduino ground.

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Inductive proximity sensor

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