The earduino is a pocket-sized hearing loss prevention device that warns users and bystanders of harmful volume levels by flashing and vibrating. This project was completed as a part of the "Making Things Interactive" course with Instr. Jake Marisco  at CMU in Fall, 2015. This device can be used by frequent concert goers, musicians, constructions workers, drag racers and anyone else who wants to protect their ears from harmful sound levels. Further, a device such as this could be used by the hearing impaired, allowing them to feel and be alerted by loud sounds that they might otherwise miss.

LED colors, brightness and blinking patterns indicate safe and dangerous listening levels.

Safe listening. Whether you're rocking out or rock mining, a steady blue light indicates a safe ambient volume. As the volume increases, so does the brightness.

Too loud. Pulsing blue and yellow lights warn the user to turn down or use hearing protection. Frequency and brightness increase as the ambient volume gets closer to dangerous levels.

Danger zone. If the flashing lights don't bother you, dueling vibrations will warn you of unsafe volume levels. Vibration intensity and frequency increase with volume.