dottedquad
New Member
Hello all, I'm currently working on a project that utilizes two 555 timers. The first 555 timer controls the 12 hour(I'm assuming the delay) once the 12hour has been met, trigger the second 555 timer to turn on a relay for approximately 2-3 seconds. Once the 2-3 second is met trigger the first 555 timer. That sounds simple so far except when I run into the RC circuit. I'm not sure what resister and capacitor to use for the 12hour.
I realize I can use a kitchen timer to set the on and off times and hook that up to the 2-3 second 555 timer. I'd rather not use this approach.
-Thanks,
rich
I realize I can use a kitchen timer to set the on and off times and hook that up to the 2-3 second 555 timer. I'd rather not use this approach.
-Thanks,
rich