A Heatbeat Sensor is a monitoring device that measures the heart rate i.e the speed of the heartbeat. A person’s heartbeat is the sound of the valves in his heart expanding or contracting as they … Read more
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Fire Alarm Circuit is one of the simple and cool projects in electronics it detects the fire using a thermistor and activates the alarming sound with a buzzer. Fire Alarms have important practical applications in … Read more