Lab 5 The Robot Car Line Follower (2-week lab)

Outcome of this lab:
1. Be able to design a driving circuit for DC motors.
2. Be able to use sensors and electrical circuits to solve real problems.
3. Be able to design circuits using potoresitors, motor drivers, and Op Amp comparators.




Read the paper, make sure you understand what's going on before you start working on it.

We will use an infrared Radiation (IR) emitter and an IR receiver to complete this task.
Watch the video here on YouTube to understand the IR emittion and receiving mechanism beofore you start. Our IR emitter and receiver are slightly different but they will do the same job.
Refer to the schematic below, make sure you understand it before you get started.



Pin Map of the motor driver:



Useful snapshot from the datasheet:



In order to follow the line:
When light is received by the sensor on the LEFT side, which means reflection received and the robot car is moving out of the RIGHT boundary and need to turn RIGHT slightly. So the LEFT motor should be turned on.

When light is received by the sensor on the RIGHT side, which means reflection received and the robot car is moving out of the RIGHT boundary and need to turn LEFT slightly. So the RIGHT motor should be turned on.



Feel free to refer to the lab reports from last year for some ideas of how to get started if you need. This lab is part of the 'Project' lab report in the past.





Follow the lab
report guidelines to avoid losing points.