Hi all,
I'm new to this forum, spent a good 2 hours just now reading and reading and I must say, I'm getting more and more interested in everything on this forum.
Anyway, I have a question for some ideas of how to design a circuit to do the following :
Probably will use 4 AAA batteries for 6V supply. A momentary pushbutton switch triggers an LED to turn on. At the same time, a 555 timer starts a 10 minute countdown before turning the LED off. If the switch gets triggered again, the LED must remain on, but the countdown timer should reset the countdown from 10 minutes again. Ultimately, if the switch is not triggered for 10 minutes, then the LED should turn off. If switch is triggered, the whole thing starts again with the 10 minute countdown.
Can someone provde me with some directions or circuit on how to achieve this?
I'm downloading some of the free PCB design programs now and will play around with it this weekend.
Thanks.
I'm new to this forum, spent a good 2 hours just now reading and reading and I must say, I'm getting more and more interested in everything on this forum.
Anyway, I have a question for some ideas of how to design a circuit to do the following :
Probably will use 4 AAA batteries for 6V supply. A momentary pushbutton switch triggers an LED to turn on. At the same time, a 555 timer starts a 10 minute countdown before turning the LED off. If the switch gets triggered again, the LED must remain on, but the countdown timer should reset the countdown from 10 minutes again. Ultimately, if the switch is not triggered for 10 minutes, then the LED should turn off. If switch is triggered, the whole thing starts again with the 10 minute countdown.
Can someone provde me with some directions or circuit on how to achieve this?
I'm downloading some of the free PCB design programs now and will play around with it this weekend.
Thanks.