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For the term "555 pwm levitation using ldrtrackback".

Diamagnetic Levitation Via Bismuth. No Power Supply, No Tricks, Just Science. :) RWGresearch.com

Diamagnetic Levitation Via Bismuth. No Power Supply, No Tricks, Just Science. 🙂 RWGresearch.com just a cool demonstration of what the element bismuth can do… makes a really cool art piece to annoy your wife…

Red Bull Gives You Wings. Magnetic Levitation Device. RWGresearch.com

Hey Redbull, here’s how you can contact me. : rwg42985@aol.com ~Russ Gries other video: Diamagnetic Levitation Via Bismuth. No Power Supply, No Tricks, Just Science. 🙂 more info on the same type of schematic…

Arduino 7: Switching a Heavy Load Using MOSFET and PV Sensor

Here I continue to demonstrate the versatility of the simple Arduino pot-voltmeter system. NOTE: I get scrambled when I describe the mosfet pin hookup. The Load has no connection to the mosfet gate, it…