First, I'm very inexperienced in designing circuits like this, so I apologize if this seems trivial. I'm basically trying to create a startup sequence effect, where LEDs turn on in a delayed order. Here's the effect I'd like to create.
- Push momentary switch once
- Wait ~2 seconds, then turn on a few LEDs (latched on)
- Wait another ~2 seconds, then turn on a few more LEDs (latched on)
- 2-4 additional on events to turn on LEDS in sequence
- Push momentary switch again to turn off all of the LEDs
I'll be running either 9v or 12v. I'd prefer to have n-delayed switches (well, at least 5 or 6) chained together with delays between each event (0.5 sec and 5 sec) to create the power up sequence effect I'm looking for. The delay between two events is constant, but it'd be optimal to have some control over the delays individually. For instance, the delay between 1 and 2 may be 2 secs, but the delay between 2 and 3 may be 1.2 secs. The specific timing will take a bit of experimentation. Each of the on events will have about 4-6 LEDs, so not much power is needed on any individual output.
Seems like a few 555 timers should manage it, but I've gotten a bit lost trying to solve this. Any help is greatly appreciated.