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I need an electronic device to create a pulse. I will provide a source of electricity and I need something to make it pulsate in a sequence. For example, 4 lightbulbs that shine in sequential order. But one can not shine until the other has died out. I want to arrange the machine in a circle pattern, with 4 points. Can someone please give me some ideas? Thanks.
I am trying to build a motor. This may be inefficient, but it is for my little sister's science fair.