video1.0<iframe src="https://www.loom.com/embed/31ea0101684047c7b3fed1995498da84" frameborder="0" width="1204" height="903" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9031204Loomhttps://www.loom.com9031204https://cdn.loom.com/sessions/thumbnails/31ea0101684047c7b3fed1995498da84-8c3825aa51a07d26.gif264.24This Loom demonstrates a low-cost Arduino reaction-time test aimed at evaluating cognitive impairment. The speaker replaces expensive cognitive testing tools with a $50 Arduino setup featuring two LED lights and two arcade buttons, where users press the correct button after a light flashes and the device measures reaction time in milliseconds. They report slower reaction times of 300 to 400 ms after poor sleep, compared to about 200 ms when they slept well. They also mention comparing these results to an ordering readiness score of about 69 and heart rate variability described as fair. The Loom closes by asking for guidance on the next project direction, including improving hardware, exploring wearable metrics, and designing the next arc.