Time control is very important in our daily life, sometimes we do forget small tasks; so this 5 To 20 Minutes Alarm Timer Circuit helps us remember. This circuit provides an alarm after a preset time by using the popular IC 555 timer. We can select a delay from 5 to 20 minutes by pressing […]
Timer Circuits
Audio Sound Generator Circuit using IC 555
Want a simple sound maker? then make noise with this electronic circuit; this small circuit makes loud beep sound from speaker using only one 555 timer, then the circuit turns 9V battery into instant audio tone. Also, this Audio Sound Generator Circuit using IC 555 is easy to build and is great for learning. Circuit […]
555 Pulse Generator Li-ion Battery Charger Circuit
Charging a Li-ion battery does not need big smart charger, but we can do it with one small 555 timer chip; also this 555 Pulse Generator Li-ion Battery Charger Circuit makes fast little pulses that charge the cell gentle and safe. Anyone can build this circuit with very few parts and with very low cost, […]
555 Timer Astable Multivibrator Circuit
This 555 Timer Astable Multivibrator Circuit is simple and easy; also astable means output never stays stable and output keeps switching high and low again and again. Moreover, the circuit creates square-wave pulses and drives LED blinking, tone generation, clock signals, and many hobby projects. Circuit Working: Parts List: Components Quantity Resistors 1k ohm, 100k […]
555 Timer Monostable Multivibrator Circuit
This article explain simple 555 Timer Monostable Multivibrator Circuit, as circuit create one single pulse when trigger comes; also time period depend on resistor and capacitor. Circuit is easy to build and can run from 5V to 12V power supply; moreover, many people use it for delay, timer, reset pulse and for buzzer control. Circuit […]
Obstacle Detection Circuit with 555 Timer and Ultrasonic Sensor
Want to build a smart obstacle detector without using Arduino? then this simple project uses a 555 timer and an ultrasonic sensor to sense distance and control a DC motor automatically. Also, it is easy to make with low-cost and perfect for beginners in electronics; therefore, this Obstacle Detection Circuit with 555 Timer and Ultrasonic […]