i want to use the qtr 8rc sensors to detect a white line on a black surface,
which means the robot has to follow a white line on a black background,
so for this type of line detection how to make the robot calibrate so that it returns a value of say 0 - 1200
i am using pico board to code this so i want to know whether a function is already written to carry out this task in pololu arduino library
so a snippet of code on how to read a white line and calibrate the sensors to a white line,
would help me a lot
thanks for any help.