This simple article is for Two Star Flasher Circuit with 555 IC. Main part is 555 timer IC which works in astable mode. In this mode IC give continuous square wave pulses. These pulses make two lamps blink one by one like star. Blink speed depend on resistors and capacitor values. Transistor are used for […]
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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. It is used for LDR as light sensing. Circuit is good for night light and alert system. The circuit have parts like 555 IC, LDR, resistors, capacitor and buzzer […]
Controlling a DC Motors Direction Circuit with IC 555 Timer
Controlling a DC Motors Direction Circuit with IC 555 Timer is easy to try. Circuit is good for automation, robotics, devices needing forward and backward move. Circuit has 555 timer, transistor, DPDT relay to change direction. Simple design is easy to build and works in both directions. 555 timer make astable output to control relay […]
IC 555 Timer Based Mini Flasher Circuit
IC 555 Timer Based Mini Flasher Circuit makes LED blink light with a set speed. This circuit often uses for signal, indicator and hobby projects. IC 555 timer work in astable mode to give pulses all the time. We can change blink speed with a potentiometer. The circuit power it with 6V battery or 6V […]
PWM LED Ramping Circuit (Slow Bright, Slow Fade)
PWM LED Ramping Circuit (Slow Bright, Slow Fade) make LED light go bright slowly and with not sudden ON/OFF This circuit is good for signal, decoration and for soft light. It uses 2× IC 555, LM393, 2N7000 MOSFET for smooth change. The circuit works best with 3 to 12V power with 6V is best. Circuit […]
Simple 555 Timer Based Animal Repeller Circuit
Simple 555 Timer Based Animal Repeller Circuit is small device to keep animals away. It make high sound which animals do not like and humans mostly do not hear it. Main part is IC 555 timer which make high frequency sound. Sound is around 15 kHz to 120 kHz (ultrasonic). This circuit is easy to […]