Building a Wailing Siren Circuit using a 555 Timer IC
If you are an electronics hobbyist then you must have heard about the 555 timer IC and its 3 popular circuits viz. astable...
alarm
Rain Detection System using Arduino and Rain Sensor
A simple Rain Detection System can be easily built by interfacing an Arduino with Rain Sensor. The sensor will detect any...
Automatic Light Fence Circuit with Alarm
Light fence circuit is used to detect the presence of any human or object in a particular area. The detecting range of Light...
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...
Automatic Medicine Reminder Using Arduino
When it comes to our loved ones, we always want to stay them healthy and fit. But what will happen if they get ill and forget...
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...
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...
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...
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...
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....
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