TECH FORUM

摘要

I'm looking for a simple circuit for a 24 hour electronic candle that uses very little power. The candle would drive a single LED. It would run for × hours (say five), then turn off; 24 hours after it was first activated, it would automatically turn back on for the predefined time.I've found several ideas, but most of them surrounded the 555 chip which has a very limited time frame.