Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

There was not ultrasonic sensor with 4 pins. For this reason, the circuit was shown like this. Trig pin1 went to pin A2 and Echo pin1 went to pin A3 on the Arduino. Trig pin2 went to pin 10 and Echo ...

It is built around Arduino Uno board (board1), seven LEDs (LED1 through LED7), three tactile switches (S1 through S3) and a few discrete components. Fig. 2: Circuit diagram of the window alarm ...

Alarm systems are complicated affairs. However, if you’re just looking to catch a sandwich thief at work or a cat spilling over all you water bottles, then Make shows you how to build an alarm ...

It’s like Dark and light Detector circuit but this time we are using Arduino to get more control over light. In this circuit, we are making a Light Sensor using LDR with Arduino to control a bulb/CFL ...

In this project, we will build Gas Leak Detection & Alarm System using MQ2 Gas Sensor and Arduino UNO Board. The MQ2 sensor is a versatile gas sensor capable of detecting a wide range of gases as well ...

The arduino flex sensor circuit is very simple and easy to understand. To read the flex sensor we need to make a voltage divider circuit with the flex sensor. We have used a 15K resistor with the ...

An Arduino is a much better choice than a Raspberry Pi for tasks that require real-time input and responses. While a Pi can ...