universal/safe way for NPN-Sensor. With Optocoupler
Description
use the circuit design from https://3dprint.wiki/reprap/anet/a8/improvement/autobedleveling soon I will be uploading a file in youtube to show you the circuit been tested. You can purchase the order in my website: www.cosplaycostumesandimages.com look for the botton Order Now and place your order.
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