How to fix PIR sensor Alarm


PIR sensor is the ideal device to use as Surveillance systems that operates by sensing human body heat. It triggers the alarm from a distance of 10 meters when a human passes. It operates both day and night. Let us see how to fix it on the wall
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How to set the Re trigger Jumper in PIR sensor Module


The PIR sensor module has a Jumper arrangement to select single trigger and re trigger modes. Let us see how it works Continue reading

How to connect PIR sensor Module


It is important to know the connections of PIR sensor module. It is easy to connect it with alarms, relay to drive AC load etc. Let us see Continue reading

How PIR Sensor works


PIR sensor module is an ideal device to make efficient alarm systems and save energy lights. Let us see how it works?

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Automatic Lighting System. Home Utility Circuit 6


downloadSave energy by installing an Automatic lighting system in your home. Connect the external lights to the system, so that it turns on the lights in the evening and turns off in the morning. No daily switching is needed and, it will light the premises of home even if nobody is there. It is too small and can be enclosed in a small plastic case.
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Alcohol Detector


MQ3_Sensor

Use this simple circuit to detect the presence of Alcohol. This kind circuit is used by Police officials to prevent drunk driving. It gives a beep when it detects the Alcohol vapour. MQ3 Alcohol sensor is now readily available and you can make the device very easily. When the Sensor detects alcohol vapour, it gives output voltage depending on the concentration of alcohol molecules in the air.
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Human Personality


Human personality is reflected in the way of behavior, daily activities and doing competitive works. Human personality can be classified into Type A, Type B and Type AB personalities according to researchers. Type A behavior (TAB) or personalities have something to do with being competitive and most of them are workaholics. Type B personalities on the other hand are generally patient, relaxed, easy-going . AB personalities have mixed profile and cannot be clearly categorized as either Type A or Type B.

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