ArduPilot SITL setup in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the SITL simulator with the default plane model.

Drone Programming

import dronekit_sitl
sitl = dronekit_sitl.start_default([1])

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

Amodel='rover'

Bmodel='copter'

Cmodel='plane'

Dmodel='submarine'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong model name like 'copter' or 'rover' when starting the plane simulator.

The default plane model is started by specifying model='plane' in start_default().

2fill in blank

medium

Complete the code to connect to the SITL instance using the correct connection string.

Drone Programming

from dronekit import connect
connection_string = '[1]'
vehicle = connect(connection_string, wait_ready=True)

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

A'udp:127.0.0.1:14550'

B'tcp:127.0.0.1:5760'

C'serial:/dev/ttyUSB0:57600'

D'udp:192.168.1.1:14550'

Attempts:

3 left

💡 Hint

Common Mistakes

Using TCP instead of UDP for SITL connection.

Using wrong IP address or port.

The SITL simulator usually listens on UDP port 14550 on localhost, so the connection string is 'udp:127.0.0.1:14550'.

3fill in blank

hard

Fix the error in the code to properly stop the SITL simulator.

Drone Programming

sitl = dronekit_sitl.start_default()
# some code
sitl.[1]()

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

Ashutdown

Bstop

Cclose

Dterminate

Attempts:

3 left

💡 Hint

Common Mistakes

Using shutdown() or terminate() which do not exist for SITL.

The correct method to stop the SITL simulator is stop().

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps each waypoint index to its latitude if latitude is greater than 0.

Drone Programming

waypoint_dict = {i: wp[1] for i, wp in enumerate(waypoints) if wp[2] 0}

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

A.lat

B>

C<

D.lon

Attempts:

3 left

💡 Hint

Common Mistakes

Using longitude instead of latitude.

Using less than instead of greater than.

We access the latitude with .lat and check if it is greater than 0 with >.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps the uppercase waypoint name to its altitude if altitude is above 10.

Drone Programming

altitude_map = [1]: [2] for wp in waypoints if wp.altitude [3] 10}

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

Awp.name.upper()

Bwp.altitude

C>

Dwp.name.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase names instead of uppercase.

Using less than or equal to instead of greater than.

The key is the uppercase name wp.name.upper(), the value is wp.altitude, and the condition checks if altitude is greater than 10 with >.