Paige designed a device that releases scents each time a friend tags her on instagram. It has three different scents that are triggered by three different hashtags: #pupsforpaige, #cheekynature, and #snickersnort. Each tag triggers a servo which is controlled by a Arduino module. Paige created three IFTTT recipes on the instagram channel, each which outputs a different voltage to the Arduino. The Arduino determines which servo to activate by reading an incoming voltage from the cloudBit.
The housing is made from laser cut plywood and has some nice mechanisms that release essential oils and fan the scent out towards your nose. Enjoy Paige’s spectacular documentation [keep scrolling down], and be sure to check out her detailed build instructions on Instructables.