SINGAPORE – It started with sneezing and coughing. Sahana Ramaprasad, 17, noticed that she and her sister had allergic reactions to dust in their surroundings.
Using a microchip connected to a sensor, Sahana developed an air quality monitor after her O levels in December 2025 to track the surrounding air.
The sensor monitors the surrounding air quality and sends the data to an Internet of Things-based platform, where she can view information such as the concentration of air particles and which gives her an estimated air quality index.
She said: “I was trying to upload a code inside the sensor to get it to work. I tried multiple times, but it didn’t work. It kept on giving me errors, which kind of frustrated me. However, I was able to overcome it after taking a break and doing more research on how to properly connect it. In the end, I was able to do it.”
“Monitoring the air quality helps us identify when dust levels may be higher, so we know when to close the window, clean the room more thoroughly, or avoid staying in dusty areas for too long.”
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