This simple article is for Two Star Flasher Circuit with 555 IC and its main part is 555 timer IC which works in astable mode; also in this mode IC give continuous square wave pulses. These pulses make the two lamps blink alternately, creating a star-like flashing effect; also the resistor and capacitor values show […]
555 Timer Projects
Automatic Light Control Switch Circuit using IC 555
To begin with, this article is for Automatic Light Control Switch Circuit using IC 555, it works with light dependent resistor (LDR). When light falls on the LDR, its resistance changes, the 555 IC converts this resistance change into a switching signal and drives the relay; the relay can then control a lamp, fan, motor, […]
Refrigerator Door Open Alarm Circuit with IC 555
Sometimes, people forget to close the fridge door and this causes loss of cooling and waste of electricity; so to solve this problem we can use a simple Refrigerator Door Open Alarm Circuit with IC 555 When the door stays open, the buzzer gives a sound, so it reminds the user to close the doo; […]
Auto On Off Light Circuit for Washroom
In washroom many time people forget to switch OFF the light because of this there is waste of electricity; so to solve this problem we can make a Auto On Off Light Circuit for Washroom. When someone presses the switch it detects the presence and light will turn ON for some time and then get […]
Magnetic Proximity Switch Sensor Circuit
The Magnetic Proximity Switch Sensor Circuit detects magnetic fields to operate in factories, security systems and automation applications; also a magnetic reed switch serves as its main sensing component. ICs like 555 timer and CD 4013 flip-flop turn relay ON/OFF when magnet is close by and then relay control other device ON/OFF. Moreover, circuit need […]
Simple Dark Sensor Circuit for Security using IC 555 timer
Simple Dark Sensor Circuit for Security using IC 555 timer is useful project for security, it senses low light and turns ON the buzzer or light. Also, the circuit uses an LDR for light sensing and works well in night lights and alert systems. Furthermore, it includes a 555 IC, an LDR, resistors, a capacitor […]