When indoor CO2 levels rise, The Classroom CO₂ display shows brain character that becomes distressed, and an audio chime prompts students to open windows, making air quality management both engaging and easy to understand.

The display we designed visually communicates indoor carbon dioxide (CO₂) levels using a color-coded system, ranging from crimson (high CO₂) to blue (low CO₂), encouraging students to take action when CO₂ levels rise.

To make this process engaging and easy to understand, we designed a brain-shaped character that changes its emotional expression based on the CO₂ levels — happy when levels are low and increasingly distressed as CO₂ rises.

Additionally, a series of smiley faces along the display's axis provide clear visual cues, and an audio chime alerts the classroom when CO₂ exceeds 500 ppm, signaling students to open the windows for better ventilation.

Key Features:

CO₂ Sensor: Continuously monitors indoor carbon dioxide levels in real-time.

Color-Coded Display: Displays air quality with a gradient of colors from crimson (high CO₂) to blue (low CO₂), making it easy to understand at a glance.

Interactive Brain Character: A fun, animated character that changes facial expressions depending on CO₂ levels, reinforcing the importance of maintaining good air quality.

Smiley Face Indicators: Simple smiley face graphics along the side of the display give additional cues for CO₂ levels.

Audio Alerts: A gentle chime sounds when CO₂ levels exceed 500 ppm, prompting students to open windows or take other actions to improve ventilation.

Impact:

‍This project is designed to prompt students take action in maintaining a healthy learning environment by opening classroom windows when indoor CO₂ got too high.