15.Line Follower Robot

Can you identify the IR sensor ?

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What does a line-following robot do?

• It follows a line on the ground

• It climbs walls

• It flies in the air

• It swims in water

How does an IR sensor detect the line on the ground?

• By emitting sound waves

• By emitting light and measuring the reflection off the line

• By detecting changes in pressure on the ground

• By detecting changes in temperature on the ground

In which direction does the robot move when using the following blocks?

• FORWARD

• BACKWARD

• LEFT

• RIGHT

From the picture, how many motors are connected to the car?

• 5

• 4

• 6

• 2

Look at the picture and answer the question.

What will happen to the line following robot if it doesn't detect any line?

• it moves backward

• it moves forward with more speed

• it turns off the micro-bit

• to stop the car

What value will the IR sensor provide as an output if it detects light?

• 3

• 1

• 2

• 0