Im trying to build a 555 circuit for my grandson, next electronics hobbyist.
I have a photo resistor to turn on a 555 by way of pin 4 reset. The 555 load drives a simple rooster sound circuit. The whole thing works fine when a light hits the photo. My question is, How do I stop this thing. ??? Once the photo resistor sees light and starts the rooster, it cant cycle and shut off. A few seconds is fine but a few hours is a bit much. Anyone know how to shut the 555 off after a certain time.
I have a photo resistor to turn on a 555 by way of pin 4 reset. The 555 load drives a simple rooster sound circuit. The whole thing works fine when a light hits the photo. My question is, How do I stop this thing. ??? Once the photo resistor sees light and starts the rooster, it cant cycle and shut off. A few seconds is fine but a few hours is a bit much. Anyone know how to shut the 555 off after a certain time.