He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

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Using the Arduino microcontroller, we will explore some of the essential and useful electronic sensors (light, sound, motion ... Class time will be allocated to help students work on their projects.

Over the years the ideas have become much more polished, as we can see with this Gesture Recognition with PIR sensors project ... from 8 adjacent points. An Arduino reads these temperature ...