Build a simple water level indicator and alarm circuit using basic electronic components. This DIY project helps monitor tank levels and alerts you when the water reaches a specific height.
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Water Level Indicator Alarm Circuit
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This simple transistor based water level indicator circuit is very useful to indicate the water levels in a tank. Whenever tank gets filled, we get alerts on particular levels. Here we have created 4 levels (low, medium, high and full), we can create alarms for more levels.
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SIMPLE ARDUINO ULTRASONIC SENSOR DOOR ALARM
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Today I decided i wanted to build an alarm for my room, when I searched online all door alarms used the PIR sensor, unfortunately mine was faulty.
and that"s when I decided to build my own alarm using an ultrasonic sensor (HC-SR04),and I found out it was really simple.
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555 Alarm/Timer Circuit
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In this instructable i will explain how to build a simple 555 circuit that will blink a led and sound a buzzer, this has many application for example you can connect an LDR between the power source and the circuit and then put it in your closet where it is dark and when someone opens the closet the alarm will sound
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Alarm Clock using AVR Microcontroller
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In this project we are going to design a simple Alarm clock using ATMEGA32 timers. ATmega32A microcontroller has a 16 bit timer, and we will be using that timer to count the seconds and develop a digital clock.
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