alarm
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Mains Power Supply Failure Alarm Circuit Although there are inverters and generators to immediately start the AC power supply whenever there is a power cut but sometime when there is no backup support and we have some critical machines running to perform some important task, it’s a good idea to atleast have an alarm which notify us as soon as power goes off. In this tutorial, we will learn how to make a simple… |
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Automatic Medicine Reminder Using Arduino When it comes to our loved ones, we always want to keep them healthy and fit. But what will happen if they get ill and forget to take medicine on time? We would be worried, right? At hospitals, there are many patients, and it is difficult to remind every patient to take medicine on time. The traditional ways require human efforts to remind them to take medicines on… |
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IoT based Door Security Alarm controlled by Google Assistant According to the FBI, home burglary occurs for every 13 seconds and 3 out of 4 homes in US will be broken into within the next 20 years says a 2017 Home burglary statistics report. In the world that is advancing rapidly with technology where cars could drive on their own and drones could capture your food, burglary should not be of much concern but the above statistics just… |
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Interfacing Flame Sensor with Arduino to Build a Fire Alarm System Fire Alarm Systems are very common in commercial building and factories, these devices usual contain a cluster of sensors that constantly monitors for any flame, gas or fire in the building and triggers an alarm if it detects any of these. One of the simplest way to detect fire is by using an IR Flame sensor, these sensors have an IR photodiode which is sensitive to IR light… |
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Fridge Door Alarm Circuit using 555 and LDR The name of the circuit itself infers the application. This circuit triggers the alarm if the door of Fridge is left open for the long time. When the door of the refrigerator is left open, the temperature inside the cabin will increase. This rise in temperature will be sensed by thermostat and try to cool down the cabin. It will always try to maintain constant temperature of… |
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Panic Alarm Button Circuit using 555 Timer IC A Panic Alarm Circuit is used to send an emergency signal immediately to the people in nearby location to call for help or to alert them. The possible panic situation can be any, it is not restricted to few situations. One could possibly keep the push button at a hand reachable distance or comfortable place it to carry out quick action in silence by pressing a single… |
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Arduino Based Digital Alarm Clock This Arduino based Real time clock is a digital clock to display real time using a RTC IC DS1307 which works on I2C protocol. Real time clock means it runs even after power failure. When power is reconnected, it displays the real time irespective to the time and duration it was in off state. In this Arduino alarm clock project we have used a 16x2 LCD… |
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Rain Alarm Rain alarm is an application which detects the rain water and blows alarm. They are useful devices and play an important role in various industries such as automobile, irrigation, and wireless communication. Desiging a rain alarm system is quite simple and we have designed here a demo rain alarm project with the help of 555 Timer IC. … |
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Simple Water Level Indicator Alarm with Buzzer Water tank overflow is a common problem which leads to the wastage of water. Though there are many solutions, like ball valves which automatically stop water flow once the tank gets full, electronics enthusiasts prefer smart electronic solutions. This comprehensive water level indicator project tutorial will guide you to build a simple DIY water level indicator circuit that… |
