I have a retired stoplight - with real lightbulbs. I am looking for a simple way to wire it to have it automatically move RED-GREEN-YELLOW cycle just as the ones on the street. I have manually switched it but was looking for something more "automatic" that I can put together as a learning project with my 15 year old.
I saw this answer: Most Simple Stoplight circuit
But I am not sure about the power requirements for the circuts - the bulbs are actual bulbs as used and are 120V and I think 100 watt.
Ideas or suggestions?