I'm trying to design a timing circuit that will flash a light. I believe i can just use 555s? I want the light to flash for x amount of seconds then stay off for y amount of minutes then flash again etc over and over until power removed. I want to be able to change x and y so am i able to use 2 small pots to control x and y ? Am having trouble figuring how to connect 2 555s (or do i need 3 for the flashing or pulses to the light?) Any help/suggestions/pictures would be great.
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