Flexible Indoor Air-Quality Control System (Product Manual Below) 

Project Summary

Objective -

• Design and Develop a sensor that measures PM2.5, CO2, Temperature, and Humidity. 

• Design and Develop a fan module that reads sensor data over Bluetooth and filters air when sensor values are past EPA recommended levels of PM2.5, CO2, Temperature, and Humidity. 

Strategy (Steps in order) -

• Determine marketing requirements.

• Quantify marketing requirements and determine Engineering Requirements.

• Develop Level 0,1,2 functional decomposition diagrams while simultaneously choosing components that meet engineering requirements.

• Develop Proof of concept for each level 2 functional decomposition module.

• Iteratively Combine proof of concepts created for functional decomposition. (Current status of project).

• Mitigate risks and bugs encountered when combining proof of concepts.

• Finalize product for expo demonstration on Thurs Aug 28, 2023.

My contribution -

• Developed driver for ESP32 uC that takes readings of PM2.5, CO2, temp, humidity, and motion.

• Modified Bluetooth driver for ESP32 uC that sends  and receives a single packet of data over Bluetooth to another ESP32.

• Assisted in the design of DC to DC buck converters for power conditioning using TI's WEBENCH software.

• Assisted in the design of 2.8V to 5V amplifier that controls fan speed of product.

• Built PCB for Sensor Module that routes power and logic to all sensors and transmits sensor data.

Work in progress -

• PCB for main module.