A hand held circuit detects the presents of an object using an IR emiter and transistor detector. The circuit is powered by a 9v battery and sounds a buzzer when the IR light beam is interrupted.
I would like to add a feature to auto OFF the circuit when no objects interupt the IR beam within 60 minutes, to conserve batteries. The power switch will be cycled to activate the circuit again.
I suspect a 555 timer circuit embedded in the above circuit is the solution. Is the 555 timer the way to go or is there a better way?
Is it possible for the circuit to automatically reset the 60 minute timer after each interrupted event and power down after 60 minutes of inactivity?
Thanks,
Jeff in Florida
I would like to add a feature to auto OFF the circuit when no objects interupt the IR beam within 60 minutes, to conserve batteries. The power switch will be cycled to activate the circuit again.
I suspect a 555 timer circuit embedded in the above circuit is the solution. Is the 555 timer the way to go or is there a better way?
Is it possible for the circuit to automatically reset the 60 minute timer after each interrupted event and power down after 60 minutes of inactivity?
Thanks,
Jeff in Florida