Hey guys, I'm stuck on this problem and was wondering if anyone could lend a hand or point me in the right direction. I need to design a traffic light circuit using one 555 timer and three LEDs so the lights flash in the sequence of green, yellow, red. Each light needs to stay on for 1 second, and then the cycle has to repeat itself. I have an idea of how to do this with three 555 timers, but have no idea how to do it with just one. Thanks in advance!