May 2, 2024 · Learn how to use the ultrasonic sensor (HC-SR04) with Arduino. This tutorial will teach you what it is, how to assemble the sensor on Arduino, and, at the end, you'll implement it into an alarm system project.

Jun 8, 2017 · Use an Arduino and an ultrasonic sensor to make a door alarm that sounds when someone comes within a certain distance.

Sep 23, 2016 · This Arduino Controlled Door alarm can be installed near the door to detect the presence of anybody at the door. Whenever somebody comes in the range of Ultrasonic sensor, buzzer starts beeping. You can adjust the sensor detection range according to your door.

This is a quick and easy guide on how to make a proximity alarm using a HC-SR04 Ultrasonic sensor, Arduino UNO, Arduino breadboard, and a 6V DC buzzer. This sensor will beep as an object move closer.

Dec 29, 2021 · This project will detect any intruders and alarm you using the components of an LED, a buzzer, ultrasonic sensor, and a LCD display. I built a security system that you can hang at your door and alarm you when an intruder is at your door using the elegoo super starter kit.

Today I decided i wanted to build an alarm for my room, when I searched online all door alarms used the PIR sensor, unfortunately mine was faulty. and that"s when I decided to build my own alarm using an ultrasonic sensor (HC-SR04),and I found out it was really simple. In this instructable i will walk you through the build an explain the code.

Oct 16, 2022 · HC-SR04 is an ultrasonic distance sensor. This economical sensor provides a sensing range of 2 to 400cm of non-contact measurement functionality with an accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a …

Using an Arduino UNO, an Ultrasonic Sensor, and a RFID Reader, you can create a simple alarm which when placed near a door, senses if that door has been opened or if someone has come in and triggers an alarm which would sound a buzzer and flash a set of LEDs until its shut off.

Ultrasonic sensor HC-SR04 is used to measure the distance to an object by using ultrasonic waves. The ultrasonic sensor HC-SR04 includes four pins: TRIG pin: this pin receives the control signal (pulse) from Arduino. ECHO pin: this pin sends a signal (pulse) to Arduino. Arduino measures the duration of pulse to calculate distance.

Mar 19, 2024 · Numerous ultrasonic sensor projects are available on the internet. But here, we present the best five Arduino ultrasonic sensor projects. Keeping your private things safe from intruders can be a challenging job. But with this Intruder Alarm project, it is easy to keep your accessories safe.