PulseSphere is a part of two piece interaction prototype called "The Rolling Light". When a person holds the sphere, it can measure person's pulse and respond to it by glowing to match the heart beat. The sphere has two other modes of interactivity. This project is open source with all designs, schematics and code available!
Read more about it and see the design files / schematics at https://makssurguy.com/the-rolling-light-project/
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