SightSense Vision Guard

The Project

SightSense Vision Guard is a smart device that uses an ultrasound sensor to detect when someone is doing close-up work like using a tablet or reading. It only tracks time when the user is actually present, and after 20 minutes, a shield automatically lowers to block vision for 20 seconds—enforcing the doctor-recommended 20-20-20 rule. Unlike screen-based or clock-based solutions, SightSense Vision Guard works for any activity and ensures breaks happen by physically pausing the user's view. The whole system is build around a Arduino Uno board. The mounting fixture is designed in TinkerCAS and 3D printed. To make the device more user-friendly, a buzzer is integrated to provide audio feedback. This dual-sensory approach (sound + physical) ensures the user is never caught off guard.

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