Diagram for capacitive sensor with optocoupler module by Didakis

Last crawled date: 3 years, 1 month ago

Diagram of connection of the capacitive sensor, for the autolevel function, with an optocoupler module.
Sometimes, i was asked for the best auto level system, for a Anet A8, or P3Steel printer. No doubts, for me a capacitive sensor with a optocoupler module.
The LJC18A3-H-Z/BX, capacitive sensor, because, is adjustable from 1 to 10mm, no matter the material to detect. With Aluminium or glass, is good.
The optocoupler module, is easy, i'm not trust with a simple circuit with a diode, or a tension divider, with a couple of resistors.
I need to protect my mainboard, and this way is cheap and easy.
I have, also a design , a little box, to encapsulate the optocoupler module.
Still working in this.
This items, can be found at:
LJC18A3-H-Z/BX 1-10mm Capacitance Proximity Sensor Switch NPN
12V 1 Channel Optocoupler.
I am not affiliated or do I get any commission from aliexpress.
UPDATE 02/04/2019:
Included electronic scheme of the optocoupler module
UPDATE 01/10/2019:
Although it was never the purpose of this "thing", attached detailed photos of the circuit for those who want to do it themselves.
UPDATE 05/16/2018: Case for optocoupler module is avalaible:
https://www.thingiverse.com/thing:2914665
UPDATE 06/01/2018: Check the pins on your motherboard, it may not correspond to the one shown in the diagram.