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!

Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

Include the LiquidCrystal library for LCD control and Keypad for managing the keyboard. Define the pins for the LCD and keypad, as well as for the buzzer, LED, and PIR sensor. Global variables ...

Gas-Leak-Detection-Alarm-System-using-MQ2-Gas-Sensor-Arduino Use the diagram to connect the components accordingly Copy the code and upload it to the arduino Overview In this project, we will build ...

Arduino Code for Speed Sensor In general, the following code makes Arduino to measure the speed of the moving object using two IR sensors and display the object speed in the I2C 16x2 LCD display. When ...

Arduino Motion Sensor – Circuit and Working The circuit diagram of the automation device using a motion sensor is shown in Fig. 2. It consists of an Arduino Nano board (MOD1), a PIR sensor (S1), a ...