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Is a simple Line follower robot
Typology: Study notes
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surface is high, the infrared light emitted by IR LED will be maximum reflected and will be detected by the Photodiode.
In case of black surface, which has a low reflectance, the light gets completely absorbed by the black surface and doesn’t reach the photodiode.
Using the same principle, we will setup the IR Sensors on the Line Follower Robot such that the two IR Sensors are on the either side of the black line on the floor. The setup is shown below.
The Material`s we used in our project are as follows:
We have used IR Sensor Module as the line detecting sensor for the project. It consists of an IR LED and a Photo diode and some other components like comparator, LED etc.
As mentioned earlier, we have used a pre – assembled IR Sensor. In case you do not have one, you can make your own sensor using the following circuit.
Arduino UNO is the main controller in the project. The data from the sensors (IR Sensors) will
be given to Arduino and it gives corresponding signals to the Motor Driver IC.
Arduino UNO detects this change and sends signal to motor driver accordingly. In order to turn right, the motor on the right side of the robot is slowed down using PWM, while the motor on the left side is run at normal speed.
Similarly, when the IR Sensor 2 detects the black line first, it means that there is a left curve ahead and the robot has to turn left. For the robot to turn left, the motor on the left side of the robot is slowed down (or can be stopped completely or can be rotated in opposite direction) and the motor on the right side is run at normal speed.
Arduino UNO continuously monitors the data from both the sensors and turns the robot as per the line detected by them.
ad as well.
Our project “Line Following Robot” perhaps is one of the most popular robot build by the roboticists. What makes this LFR is so popular, I think because of its simplicity and yet it could be used as the teaching tools of how we could implement the industrial standard control system such as the PID (Proportional Integral Deferential) control system on this robot. Another factor probably is the increase of the LFR annual tournament conducted in many countries.
The biggest problem faced in the development of our circuit, was the configuration of DC motor it took us couple of days to determine the configuration of DC motor, but at last the DC motor was configured and we used it to successfully in the ckt
We are looking forward to bring further improvements in our project, we aim to add further stability in our project, such as adding a more powerful battery.
http://www.instructables.com/id/How-to-Build-a-line-following-robot/
Textbook of Electrical Engineering by BL Theraja
http://www.electronicshub.com
