Hello
sorry for my english: I’m french 
Is there anybody who can help me?
I need a program “type” for the single line detector “SLD-01”
in advance thanks ^^
The single line detector is a device that provides a high or a low depending on if the sensor is positioned over a black or white surface. There is really no “programming” involved to use the sensor. You just read an input to see if it’s high or low.
The line detector only returns value of Low regardless of surface, and adjusting voltage does not help. Is the sensor broken?
When the LED should go off on White surface, it only dims half way also.
What is the sensor connected to? What is the supply voltage? Page one of the users guide states the LED will be off when over white, on for over black, or on for the sensor not being close to any surface. Page two of the manual is the schematic. It should be easy to determine if it has been damaged or not by troubleshooting the circuit.