This week I worked on creating new pcb for paper roller because I couldn't get the last one to work, some changes that I made on new pcb is I used different chip LM393AN. Which is much smaller than pervious one.
This is the LM393 diagram. Where I use Output1 for led light to tell me its working and dc motor which going to move when the input 1 sensor activate.
This is the whole schematic which I followed to create the whole paper roller on breadboard.
I required one 330ohm, one 33k ohm, one 10k potentiometer, Sensor, and led.
This is the final bread board version which detects reflective object and turns motor on.
Comments