I am making a 555 circuit for an LED cluster. I now also want to put in a timer which would turn it off after a certain periods of time. I wanted to be able to select 60, 90 120, 150 or 180 seconds and then it turns off. then have a manual switch to turn it back on.
Is there a standard way of doing this
I thought It might be possible to use another 555 circuit and connect to the first circuit with a transistor. could someone let me know if this is possible or if there is another a more simple way of doing this.
Is there a standard way of doing this
I thought It might be possible to use another 555 circuit and connect to the first circuit with a transistor. could someone let me know if this is possible or if there is another a more simple way of doing this.