Testing failsafe scenarios in Drone Programming - Mini Project: Build & Apply

Testing failsafe scenarios

📖 Scenario: You are programming a drone that must safely handle unexpected problems during flight. To keep the drone safe, you will create a simple system to check for failsafe conditions like low battery or lost GPS signal.

🎯 Goal: Build a small program that sets up drone status data, defines safety limits, checks for failsafe conditions, and prints the safety status.

📋 What You'll Learn

Create a dictionary called drone_status with keys 'battery', 'gps_signal', and 'altitude' with exact values 15, True, and 100 respectively

Create a variable called battery_threshold and set it to 20

Write a failsafe_checks dictionary that sets keys 'low_battery' and 'gps_lost' to True or False based on drone_status and battery_threshold

Print the failsafe_checks dictionary

💡 Why This Matters

🌍 Real World

Drones must constantly check their status to avoid crashes or damage. This project shows how to program simple safety checks.

💼 Career

Understanding how to write failsafe checks is important for drone software engineers and robotics programmers to ensure safe operation.

1

Set up the drone status data

Create a dictionary called drone_status with these exact entries: 'battery': 15, 'gps_signal': True, and 'altitude': 100

Drone Programming

# Create the drone_status dictionary with battery, gps_signal, and altitude
# Your code here

Need a hint?

Use curly braces {} to create the dictionary with the exact keys and values.

2

Define the battery threshold

Create a variable called battery_threshold and set it to 20

Drone Programming

drone_status = {'battery': 15, 'gps_signal': True, 'altitude': 100}
# Create battery_threshold variable and set it to 20
# Your code here

Need a hint?

Just assign the number 20 to the variable battery_threshold.

3

Check for failsafe conditions

Write a dictionary called failsafe_checks that creates keys 'low_battery' and 'gps_lost'. Set 'low_battery' to True if drone_status['battery'] is less than battery_threshold, else False. Set 'gps_lost' to True if drone_status['gps_signal'] is False, else False.

Drone Programming

drone_status = {'battery': 15, 'gps_signal': True, 'altitude': 100}
battery_threshold = 20
# Create failsafe_checks dictionary for low_battery and gps_lost
# Your code here

Need a hint?

Use a dictionary with keys and conditions for values. Use < and not operators.

4

Print the failsafe check results

Write print(failsafe_checks) to display the failsafe status dictionary

Drone Programming

drone_status = {'battery': 15, 'gps_signal': True, 'altitude': 100}
battery_threshold = 20
failsafe_checks = { 'low_battery': drone_status['battery'] < battery_threshold, 'gps_lost': not drone_status['gps_signal'] }
# Print the failsafe_checks dictionary
# Your code here

Need a hint?

Use the print function to show the dictionary on screen.