This article is for Automatic Light Control Switch Circuit using IC 555 It works with light dependent resistor (LDR). When light fall on LDR its resistance changes. That resistance change is converted by IC 555 and used to drive a relay. With relay we can connect lamp, fan, motor or other load. It is useful […]
Ultrasonic Blind Stick Circuit using Arduino
Blind people have big problem on road because they cannot see object in front. To solve this we made an Ultrasonic Blind Stick Circuit using Arduino Stick can sense object and buzzer which make sound to warn blind person. This project is with low cost and easy to build with parts like Arduino Nano, ultrasonic […]
Simple Humidity Level Detector Circuit
Humidity is presence of water vapor in air or soil. Too much or too less humidity is harmful for plants and for storage. So we need a Simple Humidity Level Detector Circuit. This small circuit uses only few parts and gives LED indication when humidity crosses a level. It can be used to test soil […]
Simple Refrigerator Door Open Alarm Circuit with IC 555
Sometimes people forget to close the fridge door. This causes loss of cooling and waste of electricity. To solve this problem we can use a Simple Refrigerator Door Open Alarm Circuit with IC 555 When the door is left open a buzzer sound comes to remind the user to close the door. This project uses […]
Electronic Mosquito Swatter Bat Circuit
Electronic Mosquito Swatter Bat Circuit is very common device at home and work place. It uses small battery and simple circuit to make big voltage. This big voltage come on mesh net of a bat. When mosquito or fly touches the mesh the current pass through body and insect die quickly. Main idea is to […]
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. 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 OFF […]