RC signal loss failsafe in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the RC signal is lost.

Drone Programming

if rc_signal_strength [1] threshold:
    activate_failsafe()

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

A>

B<=

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<=' causes failsafe to never activate.

The failsafe activates when the RC signal strength is less than or equal to the threshold.

2fill in blank

medium

Complete the code to set the drone to hover mode during signal loss.

Drone Programming

if rc_signal_lost:
    drone_mode = [1]

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

A"manual"

B"land"

C"return_home"

D"hover"

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'land' might cause sudden landing, which is not always safe.

Hover mode keeps the drone stable and in place during signal loss.

3fill in blank

hard

Fix the error in the failsafe activation condition.

Drone Programming

if rc_signal_strength [1] threshold:
    activate_failsafe()

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

A<

B!=

C>=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' causes failsafe to activate incorrectly.

The failsafe should activate when the signal strength is less than the threshold, not greater or equal.

4fill in blank

hard

Fill both blanks to create a dictionary mapping failsafe modes to actions.

Drone Programming

failsafe_actions = {"hover": [1], "land": [2]

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

Astabilize_drone

Binitiate_landing

Creturn_to_home

Dsend_alert

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping actions causes wrong behavior during failsafe.

'hover' mode calls stabilize_drone(), 'land' mode calls initiate_landing().

5fill in blank

hard

Fill all three blanks to complete the failsafe check and response.

Drone Programming

if rc_signal_strength [1] threshold:
    mode = [2]
    failsafe_actions[mode][3]

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

A<=

B"hover"

C()

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting parentheses causes no function call.

The code checks if signal is less or equal to threshold, sets mode to 'hover', then calls the corresponding action function.