I need help to create an electric eye sensor, for a scissor lift table. what i need it to do is. sense when the table is not high enough and activate the motor to turn on and raise the table. I do not know where to find such a sensor, nor do i know what type of sensor i will need. because the table can roll around slightly, it has to be able to read the entire length of the table, not just a small position target. So i will a sensor that can project a laser and read if the reflection is present or not. If not present the table will rise.

 

Based on your discription a laser sensor is a very expensive way to achieve your goal

its just simply that the table goes to a sertain hight

control the motor with an end switch and make this one adjustible in hight (if that is required) other wise instaled fixed on the hight you want

if you mean something different plaese make a sketch of what you mean

Robert-Jan