Watch as a unique Cup Noodles Timer is created using potential energy—no batteries or power supply required! By harnessing the weight of a cup of noodles with hot water, weighing approximately ...

For the 0.3 second to 10 minutes timer version the potentiometer is 100kΩ, R1 = 9.1kΩ, R2 = 910kΩ, R3 = 220kkΩ and C1 = 100µF. For the 15 seconds to 10 hours timer version the potentiometer is 1MΩ, R1 ...