chaser

Hi All, I've attached a PCB layout I'm working on (minus the board itself). I set it up a funtional(?) version on a solderless breadboard first, BUT it doesn't work. I've been studing 555/4017 diagrams till I'm crosseyed and I can't figure out why... :confused: Thx, Joel

I am used to building novelty led chaser kits and diy circuits that chase. It’s usually a single led lighting up and moving through a line or circle as one on then off next on then of etc around or down a line of LEDs. I want a circuit to control 16 LEDs in a chaser effect that has the reverse...

Hi everybody, I’m very new to electronics - trying to make a breathing LED chaser circuit with different colored LED’s. I was hoping somebody could help me understand how this might be constructed. I want to wire 4 5mm LED’s (red, green, blue, yellow) to breathe in sequence - red breathes...