This is where traffic-light countdown timers help. They are digital displays that show the number of seconds remaining before ...

Automatic timers that turn lights and electric appliances on and off at predetermined times have become increasingly popular with the introduction of ”smart” models. With built-in microprocessors ...

The project allows a user to turn OFF the buzzer or bell for 10 hours to prevent annoyance from unexpected doorbell ring when falling asleep. The doorbell circuit contains a resettable timer which is ...