Real-time sensor dashboard in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the library needed to read sensor data.

Raspberry Pi

import [1]

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Agpiozero

Btime

Cos

Dsys

Attempts:

3 left

💡 Hint

Common Mistakes

Importing unrelated libraries like os or sys.

Forgetting to import gpiozero for sensor control.

The gpiozero library is used to interact with sensors on Raspberry Pi.

2fill in blank

medium

Complete the code to create a temperature sensor object on GPIO pin 4.

Raspberry Pi

sensor = gpiozero.TemperatureSensor([1])

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A17

B4

C22

D27

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong pin numbers that don't match the hardware setup.

Confusing pin numbers with sensor types.

GPIO pin 4 is commonly used for temperature sensors in examples.

3fill in blank

hard

Fix the error in the code to read the current temperature value.

Raspberry Pi

current_temp = sensor.[1]

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Avalue

Btemperature()

Cget()

Dread()

Attempts:

3 left

💡 Hint

Common Mistakes

Calling a method that does not exist like read() or get().

Using parentheses with a property.

The value property gives the current sensor reading directly.

4fill in blank

hard

Fill both blanks to create a dictionary with sensor name and its current value.

Raspberry Pi

sensor_data = [1]: [2]

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A'temperature'

Bsensor.value

C'humidity'

Dsensor.read

Attempts:

3 left

💡 Hint

Common Mistakes

Using method calls instead of properties for sensor value.

Not using quotes around the dictionary key.

The dictionary key is the sensor name as a string, and the value is the current reading from sensor.value.

5fill in blank

hard

Fill all three blanks to create a dashboard update function that prints sensor data with a label.

Raspberry Pi

def update_dashboard():
    print(f"[1]: [2] °C")
    return [3]

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

A'Temperature'

Bsensor.value

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using method calls instead of properties for sensor value.

Returning the sensor value instead of None.

The function prints the label 'Temperature' and the current sensor value, then returns None as it only outputs data.