Can anyone help in robotics? i want a white line detecting sensor which gives reliable output for the movement of robot in the region as shown in the fig. as we can see there are grids with green background and white color grids. I tried with IR sensors they getting quite unreliable. I just expect some suggestions. Instead of line follower if you think something else will do more well then please suggest we will work on it. We have to actually make a pyramid on khafraa region we have decided the block placing mechanism just not able to trace the paths well and reliably.