Stroboscopes produce carefully timed pulses of light in order to make a rotating object appear still. While this may seem like something of an exotic concept, YouTuber Mr. Innovative decided to build his own using an Arduino Nano.
His project uses a PN2222A transistor to drive a 10W LED, which acts as the device’s light source. The spinning RPM is set via a potentiometer, and a small OLED provides user feedback.
As shown in the video below, the stroboscope is able to cause a sign spinning around on a fan to appear nearly stationary. If you’d like to create you own, Arduino code is available here.
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