Week 7 - Journal

B) Coding

1- define variables (Motor pins ) 2,3,4 and 5

2- Set them as OUTPUT

3- Write the moveForward function to make the 2 motors move in the same direction

4- call it in the loop

5- test the code & the circuit together, and it worked successfully

6- Create stopMotors fuction then test it too

7- Create turnRight function and test

8- create ultrasonic sensor variables pins (trig = 9, echo = 10)

9- create ultrasonic sensor function (calcDistance), it returns int variable (distance)

10- call it in the loop and put its value in distance variable

11- print the distance to make sure it works well

12- remove the print instruction

13- the defualt is the robot car will move forward until it finds an objwct

14- make a condition if the there is a object 20cm away or less

• stop motors

• turn right alittle

• move forward again (because of the loop) or stop again and turn until there is an object to move forward

15- Create IR sensor pin =6

16- In the loop function, if the IR reads 0 (there is no light/ there is an object or wall), then turn right to avoid it.