MagAlpha sensor detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder on the rotating shaft. Unlike most Arduino & Genuino boards, the MagAlpha ...

They feature analog pins for reading analog components (e.g., potentiometer, flex sensor, pH sensor), use a programming app available on major desktop operating systems, and are relatively affordable ...

The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery.

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As anyone who takes medicines regularly will attest to, the days have a tendency to blur together, making it hard to remember if you did something like take that day’s dose or not. There are plenty of ...

Contributed by Rebecca R. Richards-Kortum; received January 23, 2026; accepted April 9, 2026; reviewed by Audrey Bowden, Nicholas James Durr, and Milind Rajadhyaksha Early cancer detection is crucial ...