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Wiring npn auto leveling sensor with ramps

3dprintnow

Wiring npn auto leveling sensor with ramps
August 11, 2020 07:31AM

Registered: 3 years ago
Posts: 18

Hello
I need to know how wiring blue LJ12A3-4-Z/BX npn auto leveling sensor with ramps 1.6

I see tutorials some resistors and other no

So I need to know how do it
Thank you

Edited 1 time(s). Last edit at 08/11/2020 09:56AM by 3dprintnow.

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Ohmarinus

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 08:07AM

Admin
Registered: 11 years ago
Posts: 3,096

There's a lot of info about it on the web as you explained. What exactly are you having issues with? Are the tutorials not clear?

http://www.marinusdebeer.nl/

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3dprintnow

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 08:14AM

Registered: 3 years ago
Posts: 18

yes i need clear tutorial for how wire npn auto leveling sensor with ramps and this type need resistors or not

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Ohmarinus

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 11:05AM

Admin
Registered: 11 years ago
Posts: 3,096

First you should try if the sensor works on 5 volts, sometimes they do. So I would say look for a schematic, get a power supply that supplies 5v and see if it triggers the sensor lighting up the LED on the top. Otherwise I suggest maybe getting an optocoupler or using a voltage divider. The tutorials that I've seen are very clear and I cannot make it any clearer:
[mertarauh.com]

http://www.marinusdebeer.nl/

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3dprintnow

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 11:14AM

Registered: 3 years ago
Posts: 18

Please check this image this sensor from 5 to 36 volt

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Ohmarinus

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 02:15PM

Admin
Registered: 11 years ago
Posts: 3,096

Quote
3dprintnow
Please check this image this sensor from 5 to 36 volt

If it works at 5v then you do not need any resistors. You can just hook it up to your endstop connection. Just make sure you wire it correctly and also test if it works before you try to home the machine. If it doesn't work and it digs into your heated bed a lot can go wrong.

http://www.marinusdebeer.nl/

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3dprintnow

Re: Wiring npn auto leveling sensor with ramps
August 11, 2020 04:21PM

Registered: 3 years ago
Posts: 18

ok last thing can tell me diagram of cables connection for m npn sensor LJ12A3-4-Z/BX 5v-35v