A Simple Adjustable Frequency Square Wave Generator Circuit provides an easy and flexible solution for signal processing, modulation and many electronic projects. Here we see variable frequency oscillator using 555 timer IC which makes square waves and where user can change frequency; also 555 works in astable mode and turning potentiometer changes output speed. Circuit […]
555 Timer Projects
Simple Sawtooth Wave Generator Circuit
A Simple Sawtooth Wave Generator Circuit finds applications in oscilloscopes, TVs, function generators and PWM systems. IC 555 is very common and is easy to make sawtooth and voltage goes up slow and drop fast in sawtooth shape. Also, frequency changes with potentiometer and circuit works with 5V to 15V. Circuit Working: Parts List: Components […]
Controlling a DC Motors Direction Circuit with IC 555 Timer
Controlling a DC Motors Direction Circuit with IC 555 Timer is easy to try, as this circuit is good for automation, robotics, devices needing forward and backward move. Furthermore, circuit has 555 timer, transistor, DPDT relay to change direction and this simple design is easy to build and works in both directions. Also, 555 timer […]
PWM Dimmer Circuit for 12V DC Lamp
This post is about PWM Dimmer Circuit for 12V DC Lamp which controls lamp brightness and saves energy, also main part of this circuit is IC 555 timer chip which make PWM signal. Furthermore, PWM signal change power to lamp by duty cycle and IC 555 timer works like astable multivibrator at 2.8KHz which is […]
IC 555 Timer Based Mini Flasher Circuit
IC 555 Timer Based Mini Flasher Circuit makes LED blink light with a set speed, as this circuit often uses for signal, indicator and hobby projects. Also, IC 555 timer work in astable mode to give pulses all the time and if required we can change blink speed with a potentiometer, in addition the circuit […]
Simple Dark Sensor Circuit with Buzzer
The Simple Dark Sensor Circuit with Buzzer is an easy project to build because it detects the absence of light and activates a buzzer, moreover, users can apply it in night lights, security systems and alarm circuits. Here, circuit works with LDR, 555 timer and buzzer, as low light makes buzzer ON. Furthermore, this circuit […]