This is a PCB that's meant to mimic a traffic light! I made it because I thought it was cool and I wanted to learn more about timing and RC circuits!
Please keep in mind you need around 1% precise capacitors, resistors etc for exact accurate timing but normal parts do just fine: it may be off my 200-300 Milliseconds!
It uses RC timing and 2 Ne555p chip's that use Astable mode, this causes the led's to switch on and of just like a traffic light!
This is for #resolution-hardware in hackclub which you should definitely join! :D