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Nathan made an incredible “Time Fountain” fluorescent drops illuminated by LEDs, he writes – “I suppose it might be called a “Backwards in Time Fountain” or a “Time Manipulation Fountain” but I figured those titles would be a bit long. Using an old battery-powered small fountain as a base, drops are pumped through a brass tube, falling out of the end at a very regular interval. A microcontroller coordinates the speed of the pump and the strobe rate of the LEDs.”Link.