Line follower Robot

Line follower Robot

This robot will follow the black line or it will only move on the black road ,and it will never go out of road.It will stop in case obsticle comes in it's passage. Based on 8051 We have fixed two light sensors on fore side on the robo. The principle of sensors is that black colour will normally observe the light where other colours will normally reflects the lights light source is fixed down ward Ld1 ,a white led reflected light will fall on the ldr if the light is more the resistance of the ldr is normally low and transister remains in cutoff state When the robo moves on the black road , the light reflected is less and the ldr resistance is increasd, vr1 forms a potential driver along with ldr due to increase in resistance the base voltage on t1 will rise to conductionlevel and transister will go into on (conduction)state. Resulting it’s collector which was getting high logic from the default microcontroller pin will become low. This low logic detection confirms that the robo is on the black road if the robo is our of the black road this logic will become high and it indicates off-road. Depending upon the left or right sensor robo will move towards right or left direction in order to stay on road out put from both the sensors shoul be low when the robo is on the road....