The ambient door knob is part of the SleepStars connected night time "go-to-bed" system. It is the product that initiates the system to turn on and it also communicates information to parents of kids who have and use the doorknob. It is meant to make the child feel like they are entering a magical bedroom world and that they have transformed it to be a space that is no longer "scary and dark" at night. Entering this soothing environment and knowing it won't be scary if they initiate the system helps ease them into a smooth and calming "go-to-bed" experience.
The doorknob itself will be lit up with a white light that "breaths" when the system is not activated, but it indicates to the child that the system is on. When they enter their bedroom and want to activate the system at night, they grab the doorknob and press the FSR sensor where a keyhole would typically be on the door knob and it activates the neopixel light (that was previously white and breathing) to animate and turn shades of blue. Pressing the FSR also activates the second product of the system, which is an ambient light we've named "Star Cloud" that you can read about in this gallery (http://integratedinnovation.xsead.cmu.edu/gallery/projects/sleepstars-ambient-light).It creates the visuals for the calming atmosphere.
The following link is the full IoT ecosystem Gallery Page: http://integratedinnovation.xsead.cmu.edu/gallery/projects/sleepstars-wip-8295faa7-5fc4-40ee-b535-27295299c750.
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