Gang!
I'am tinkering with a project and need a timer that will run from say 10 minutes, output a pulse (either low to high or high to low) for say 1 minute and then reset and repeat the time process over and over and over.
timer counts 10 minutes, output goes high for one minute, counter resets and starts counting down another ten minutes.
the time need not be super accurate to the 9th degree, and in fact can wonder around a bit. Adjustable time would be nice with either a dip switch or small trimmer pot.
I have been kicking around a 555 running oscillator, a ripple counter and a one shot after that..
No microprocessors!!
So that's the project.. any ideas??
thanks.. mike
I'am tinkering with a project and need a timer that will run from say 10 minutes, output a pulse (either low to high or high to low) for say 1 minute and then reset and repeat the time process over and over and over.
timer counts 10 minutes, output goes high for one minute, counter resets and starts counting down another ten minutes.
the time need not be super accurate to the 9th degree, and in fact can wonder around a bit. Adjustable time would be nice with either a dip switch or small trimmer pot.
I have been kicking around a 555 running oscillator, a ripple counter and a one shot after that..
No microprocessors!!
So that's the project.. any ideas??
thanks.. mike