This tutorial show how to make a Infrared (IR) Sensor Alarm Circuit using TSOP1738. It finds intruder using light which we cannot see. This alarm uses infrared light so people call it IR alarm. It make one invisible light beam with small chip named IC 555. If someone walk in front of light, then the […]
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Infrared (IR) Intruder Alarm Circuit
This article tell how to make new type of Infrared (IR) Intruder Alarm Circuit. It can find person who walk through invisible light beam. Circuit have two main part: one transmitter and other one is receiver. Transmitter send out one infrared light beam across a room. If someone goes in front of light the LED […]
Simple Solar Powered Plant Watering Alarm Circuit
Simple Solar Powered Plant Watering Alarm Circuit tell us how to make small device that gives water to plant when plant need it. There are many ways to use solar energy but it should be clean and should not cost much. This device is mix of solar power and electronics which is very interesting. What […]
Fire Alarm Circuit
Fire Alarm Circuit is very important for every home. This small thing can save life because it tell early when fire is happening. In this article we will learn how to make easy fire alarm circuit by yourself. Good for small place like home, shop or small work area where there is no need of […]
Laser Alarm Circuit for Security
This article show how to make a Laser Alarm Circuit for Security which even real spy can use it! It cost less than big expensive alarm from shop. Also it is fun to make by ourselves and is good to protect our things. What is a Laser Alarm Circuit for Security Laser alarm circuit is […]
Simple Rain Detector Alarm Circuit
This Simple Rain Detector Alarm Circuit will help from getting our clothes wet from the sudden rain. It show how to make a easy rain detector alarm circuit. This circuit uses sensor to know when it is going to rain and then it make sound to give warning. So we can take umbrella or bring […]