The Fire Alarm Circuit using Thermistor and IC 555 help to find and warn people about fire, as this design uses IC 555 and thermistor to check temperature change and maybe fire. Furthermore, thermistor is special part which feels the temperature change, also circuit is easy to make and thermistor changes resistance with heat and […]
Automation Circuits
Power ON Delay Circuit
To begin with, Power ON Delay Circuit using IC 555 give time gap between power ON and circuit starts. When trigger comes, IC 555 work in monostable mode and give one output pulse for set time; furthermore, resistor R1 and capacitor C2 make timing part for delay. When the circuit is OFF, the output stays […]
Air Flow Detection Circuit
Air Flow Detection Circuit means basic electric circuit to check if air is moving or not; also people use this in machines or home projects to watch air flow. Furthermore, in this project we make very simple circuit to see if air is moving and also we used broken AC bulb and few cheap parts […]
Simple Tilt Sensor Switch Circuit
Simple Tilt Sensor Switch Circuit control ON/OFF of LED or buzzer, also this tilt sensor work like small seesaw switch. In this circuit , inside a sensor there can be a small metal ball. When sensor stand straight the ball touch two points and then the current can pass and when sensor tilts the ball […]
Simple Darkness Detector Circuit
LED turn ON by LDR when dark and LDR and resistor connect in voltage divider circuit. During bright light transistor base get low voltage so transistor stay OFF and during dark come LDR resistance goes down and base voltage goes up with transistor turn ON and LED light up. Hence, this Simple Darkness Detector Circuit […]
Motion Detector Circuit using IC 555
This easy Motion Detector Circuit uses IC 555 to find human from far, as circuit have two parts: Transmitter: IC 555 work like astable multivibrator and it make square wave signal and this signal goes out through IR sensor (infrared). Receiver: Phototransistor see IR beam and if someone moves and block the beam then phototransistor […]