This Instructable will show you how to make giant, super cool, glowing balloons that react to surrounding air quality. Inside each balloon is a tri-colored LED. This LED reacts to data from an air quality sensor, turning green, yellow or red based on low, average, and high values.
Even without any fancy circuitry, these look pretty awesome at night. The project could be improved by adding a transistor to make the balloon illumination brighter, and by more carefully calibrating the air quality sensors to temperature and humidity.
This is a project by Stacey Kuznetsov
, Jian Cheung
, George Davis
and Eric Paulos
at Carnegie Mellon University. Photos were taken by Chloe Fan
and Iris Howley
Please feel free to contact Stacey Kuznetsov (firstname.lastname@example.org
) if you have any comments or questions.