char passwd2[] = { '9', '2', '3', '9', '2', 0x0 }; // "Master" password Password password2 = Password( passwd2 ); // password #define KIDS_MODE 1 // Set to 1 for ...

An Arduino project implementing a security alarm system featuring PIN code access via a 4x4 keypad, status updates on a 16x2 LCD, motion detection using an HC-SR04 ultrasonic sensor, and ...

In this article, I have added three sensors with Arduino UNO and user can choose the required sensor with the help of keypad ... pin here to indicate the motion, so whenever the toggle is turned ON ...

He’s constructed an Arduino keypad door lock — without using any ... Down the road he’s also planning on adding a knock sensor using the small speaker that is already part of the circuit ...

Not only we can measure the speed of moving cars or other objects, but we can also utilize this Arduino based speed sensor in scientific experiments to study motion, acceleration ... an Arduino Uno, ...

This voltage can be read by an Arduino digital input and then the Arduino can act upon it. The PIR Motion Sensor on the left is made by Parallax and sold by Radio Shack. The one on the right comes ...

The project ‘SafeHaven Shield,’ is an Arduino-driven home security system seamlessly integrating RFID and PIR sensors with a keypad lock ... display using an LCD when entering the house, meeting ...

Today in this tutorial, we will use one such sensor BH1750 Light Sensor Module and interface it with Arduino and show the Lux value over 16x2 LCD. The sensor uses I 2 C serial communication protocol ...