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Fan-Flash Alternative

Stroboscope effects with Old-School digital logic

Fan-Flash Alternative
This project is based on the ‘Fan-Flash’ published in the December 2010 edition, a circuit that gives the illusion of stopping the blades of a running fan in a PC by using a flashing light. Prompted by a number of remarks that the educational value of this project would be much higher if the circuit was implemented without a microcontroller, we hereby present a circuit with almost the same functionality, but built using digital logic only.
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