CBOR for constrained devices in IOT Protocols - Mini Project: Build & Apply

CBOR for Constrained Devices

📖 Scenario: You are working with small IoT devices that have limited memory and processing power. These devices need to send sensor data efficiently over the network. Using a compact data format like CBOR (Concise Binary Object Representation) helps reduce the size of the data sent.In this project, you will create a simple sensor data dictionary, configure a threshold value, encode the data to CBOR format, and then display the encoded result.

🎯 Goal: Build a small program that creates sensor data, sets a threshold, encodes the data using CBOR, and prints the encoded bytes. This simulates how constrained devices prepare data for efficient transmission.

📋 What You'll Learn

Create a dictionary called sensor_data with exact keys and values

Add a variable called threshold with a specific numeric value

Use the cbor2 library to encode the dictionary

Print the encoded CBOR bytes as output

💡 Why This Matters

🌍 Real World

IoT devices often have limited memory and bandwidth. Using CBOR helps send data efficiently, saving power and network usage.

💼 Career

Understanding CBOR encoding is useful for roles in IoT development, embedded systems, and network programming where data efficiency is critical.

1

Create sensor data dictionary

Create a dictionary called sensor_data with these exact entries: 'temperature': 22.5, 'humidity': 60, 'device_id': 'sensor_01'

IOT Protocols

# Create the sensor_data dictionary with temperature, humidity, and device_id
# Your code here

Need a hint?

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

2

Add threshold configuration

Add a variable called threshold and set it to the numeric value 25

IOT Protocols

sensor_data = {'temperature': 22.5, 'humidity': 60, 'device_id': 'sensor_01'}
# Add the threshold variable and set it to 25
# Your code here

Need a hint?

Just create a variable named threshold and assign it the value 25.

3

Encode sensor data to CBOR

Import the cbor2 library and encode the sensor_data dictionary into a variable called encoded_data using cbor2.dumps(sensor_data)

IOT Protocols

sensor_data = {'temperature': 22.5, 'humidity': 60, 'device_id': 'sensor_01'}
threshold = 25
# Import cbor2 and encode sensor_data into encoded_data
# Your code here

Need a hint?

Use import cbor2 at the top, then encode with cbor2.dumps().

4

Print the encoded CBOR data

Print the variable encoded_data to display the CBOR encoded bytes

IOT Protocols

import cbor2

sensor_data = {'temperature': 22.5, 'humidity': 60, 'device_id': 'sensor_01'}
threshold = 25
encoded_data = cbor2.dumps(sensor_data)
# Print the encoded_data variable
# Your code here

Need a hint?

Use print(encoded_data) to show the encoded bytes.