Axes of rotation (roll, pitch, yaw) in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign the roll axis value correctly.

Drone Programming

roll = drone.get_[1]()

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

Apitch

Broll

Cyaw

Daltitude

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing roll with pitch or yaw.

The roll axis controls the rotation around the front-to-back axis of the drone.

2fill in blank

medium

Complete the code to update the pitch angle of the drone.

Drone Programming

drone.set_[1](30)

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

Apitch

Broll

Cyaw

Dthrottle

Attempts:

3 left

💡 Hint

Common Mistakes

Using roll or yaw instead of pitch.

Pitch controls the rotation around the side-to-side axis, tilting the drone forward or backward.

3fill in blank

hard

Fix the error in the code to correctly read the yaw value.

Drone Programming

current_yaw = drone.get_[1]()

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

Aspeed

Broll

Cpitch

Dyaw

Attempts:

3 left

💡 Hint

Common Mistakes

Using roll or pitch instead of yaw.

Yaw is the rotation around the vertical axis, turning the drone left or right.

4fill in blank

hard

Fill both blanks to create a dictionary mapping axes to their current values.

Drone Programming

axes = {'roll': drone.get_[1](), 'pitch': drone.get_[2]()}

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

Aroll

Bpitch

Cyaw

Daltitude

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up yaw or altitude for roll or pitch.

This dictionary stores the current roll and pitch values from the drone.

5fill in blank

hard

Fill all three blanks to create a dictionary with all three axes and their values.

Drone Programming

axes = {'roll': drone.get_[1](), 'pitch': drone.get_[2](), 'yaw': drone.get_[3]()}

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

Aroll

Bpitch

Cyaw

Dspeed

Attempts:

3 left

💡 Hint

Common Mistakes

Using speed instead of yaw or mixing axes.

This dictionary holds the current values for roll, pitch, and yaw axes of the drone.

Practice

1.

Which axis controls the drone's rotation that tilts it side to side?

easy

A. Pitch

B. Roll

C. Yaw

D. Throttle

Solution

1. Step 1: Understand the meaning of roll

   Roll is the rotation that tilts the drone left or right, like tipping side to side.

2. Step 2: Match roll to the axis

   Since roll controls side to side tilt, it matches the question.

3. Final Answer:

   Roll -> Option B

4. Quick Check:

   Side to side tilt = Roll [OK]

Hint: Roll = side tilt, Pitch = forward/back, Yaw = turn [OK]

Common Mistakes:

• Confusing pitch with roll
• Thinking yaw controls tilt
• Selecting throttle which controls speed

2.

Which of the following is the correct way to set the yaw angle to 45 degrees in a drone control program?

drone.set_yaw(____)

easy

A. "45"

B. set_yaw(45)

C. yaw = 45

D. 45

Solution

1. Step 1: Identify the correct argument type

   The method expects a number for the angle, so 45 without quotes is correct.

2. Step 2: Check the method call syntax

   drone.set_yaw(45) correctly calls the method with the number 45.

3. Final Answer:

   45 -> Option D

4. Quick Check:

   Number angle without quotes = 45 [OK]

Hint: Use numbers for angles, no quotes needed [OK]

Common Mistakes:

• Using quotes around numbers
• Assigning inside method call
• Calling method without object prefix

3.

What will be the output of this code snippet controlling drone rotation?

roll = 10
pitch = -5
yaw = 90
print(f"Roll: {roll}, Pitch: {pitch}, Yaw: {yaw}")

medium

A. Roll: 10, Pitch: -5, Yaw: 90

B. Roll: 10, Pitch: 5, Yaw: 90

C. Roll: 0, Pitch: -5, Yaw: 90

D. Error: yaw not defined

Solution

1. Step 1: Check variable assignments

   roll is 10, pitch is -5, yaw is 90 as assigned.

2. Step 2: Evaluate the print statement

   The f-string prints the values exactly as assigned.

3. Final Answer:

   Roll: 10, Pitch: -5, Yaw: 90 -> Option A

4. Quick Check:

   Print variables as assigned = Roll: 10, Pitch: -5, Yaw: 90 [OK]

Hint: Print variables exactly as assigned in f-string [OK]

Common Mistakes:

• Ignoring negative sign in pitch
• Assuming yaw is zero
• Mistyping variable names

4.

Find the error in this code that sets drone rotation angles:

drone.roll = 15
pitch = 20
drone.yaw = 45
print(f"Roll: {drone.roll}, Pitch: {pitch}, Yaw: {yaw}")

medium

A. roll should be assigned with drone.set_roll()

B. pitch should be drone.pitch

C. Variable yaw is not defined before print

D. print statement syntax is incorrect

Solution

1. Step 1: Check variable definitions

   roll and yaw are accessed as drone.roll and drone.yaw, pitch is a separate variable.

2. Step 2: Identify undefined variable in print

   yaw is used without drone prefix and not defined as variable, causing error.

3. Final Answer:

   Variable yaw is not defined before print -> Option C

4. Quick Check:

   Undefined variable in print = yaw [OK]

Hint: Check all variables used in print are defined [OK]

Common Mistakes:

• Assuming yaw variable exists without prefix
• Confusing pitch variable scope
• Thinking print syntax is wrong

5.

You want to program a drone to tilt forward by 30 degrees, roll right by 15 degrees, and turn left by 90 degrees. Which code snippet correctly sets these rotations?

Option A:
drone.set_pitch(30)
drone.set_roll(15)
drone.set_yaw(-90)

Option B:
drone.set_pitch(-30)
drone.set_roll(-15)
drone.set_yaw(90)

Option C:
drone.set_pitch(30)
drone.set_roll(-15)
drone.set_yaw(90)

Option D:
drone.set_pitch(-30)
drone.set_roll(15)
drone.set_yaw(-90)

hard

A. Pitch 30, Roll 15, Yaw -90

B. Pitch -30, Roll -15, Yaw 90

C. Pitch 30, Roll -15, Yaw 90

D. Pitch -30, Roll 15, Yaw -90

Solution

1. Step 1: Understand direction signs

   Forward tilt means positive pitch (30), roll right means positive roll (15), turn left means negative yaw (-90).

2. Step 2: Match signs to code options

   Pitch 30, Roll 15, Yaw -90 matches pitch=30, roll=15, yaw=-90 correctly.

3. Final Answer:

   Pitch 30, Roll 15, Yaw -90 -> Option A

4. Quick Check:

   Forward=+pitch, Right=+roll, Left=-yaw [OK]

Hint: Positive pitch forward, positive roll right, negative yaw left [OK]

Common Mistakes:

• Mixing positive/negative signs for directions
• Confusing roll and pitch directions
• Assuming yaw left is positive