"Everyone knows that it's a myth that technology has reduced our use of paper of course," offers first-year student Runshi Wei. "But there is also a unique gratification with crumpling up drafts and throwing them into the trash bin." Thus was born SLAM JUNK. Indeed, there is a long history of office-based basketball hoops, and Runshi's project takes things to the next level by integrating motion sensors, light and sound effects—all powered by Arduino. 

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"SLAM JUNK is an electronic indoor basketball hoop. If you sink the shot, LED lights and cheering sound effects are triggered to celebrate!"


"One day, I noticed my friend shouting 'slam dunk!' when she tossed a piece of crumpled paper into the trash can. It was a simple step to add a bit more delight to the experience—SLAM JUNK is an interactive device that provides a bit of silliness and joy," says Runshi. "Sink the shot and watch it light up and cheer for you. Or hang it over a trash can to add a bit of tech fun to your daily life."

The way SLAM JUNK works is simple: When triggered, an infrared sensor detects the paper and triggers the LED light strip and speaker audio. (Users also can also switch off the sound effects if it becomes too distracting for their workmates; the running lights will still animate if the shot is made.)