Why motor control is needed in Arduino - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the motor by setting the pin HIGH.

Arduino

digitalWrite(motorPin, [1]);

Drag options to blanks, or click blank then click option'

ALOW

BINPUT

CHIGH

DOUTPUT

Attempts:

3 left

💡 Hint

Common Mistakes

Using LOW instead of HIGH to start the motor.

Setting the motor pin to HIGH turns the motor on by providing voltage.

2fill in blank

medium

Complete the code to set the motor pin as an output.

Arduino

pinMode(motorPin, [1]);

Drag options to blanks, or click blank then click option'

AOUTPUT

BINPUT

CINPUT_PULLUP

DANALOG

Attempts:

3 left

💡 Hint

Common Mistakes

Setting pinMode to INPUT instead of OUTPUT.

To control a motor, the pin must be set as OUTPUT to send signals.

3fill in blank

hard

Fix the error in the code to stop the motor by setting the pin LOW.

Arduino

digitalWrite(motorPin, [1]);

Drag options to blanks, or click blank then click option'

AOUTPUT

BHIGH

CINPUT

DLOW

Attempts:

3 left

💡 Hint

Common Mistakes

Using HIGH instead of LOW to stop the motor.

Setting the motor pin to LOW stops the motor by cutting off voltage.

4fill in blank

hard

Fill both blanks to control motor speed using PWM.

Arduino

analogWrite(motorPin, [1]); // speed value between 0 and [2]

Drag options to blanks, or click blank then click option'

A255

B100

C0

D1023

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1023 which is for analogRead, not analogWrite.

Speed values start at 0 (off) and go up to 255 for full speed in Arduino PWM.

5fill in blank

hard

Fill all three blanks to create a dictionary of motor speeds for different directions.

Arduino

motorSpeeds = [1]: 255, [2]: 0, [3]: 128}

Drag options to blanks, or click blank then click option'

A"forward"

B"stop"

C"half"

D"backward"

Attempts:

3 left

💡 Hint

Common Mistakes

Using numbers as keys instead of strings.

This dictionary maps directions to speed values: full speed forward, stop, and half speed.