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DESIGNING A SIGNALING SYSTEM USING ARDUINO UNO
Ismoilov Ro‘zibek Rajabovich
Teacher of the Department of "Technological Processes and Production
Automation", Bukhara State Technological University
E-
mail:
Abstract:
Today, security systems have become an integral part of our lives. This Arduino Uno
microcontroller in the article using simple but effective alarm system system how create possible
seeing We will go out. This project is HC-SR04 ultrasonic sensor and alarm using devices (buzzer
and LED) security to provide help gives.
Keywords: Arduino Uno,
HC-SR04 ultrasound sensor, alarm system, security, microcontroller,
buzzer, LED, distance measurement, automation, programming, electronics, real -time monitoring,
open coded platform, sensor technology, cost-effective solution.
Annotation:
V sovremennom mire systemy bezopasnosti steel neotemlemoy chastyu nashey jizni.
V dannoy state rassmatrivaetsya, kak sozdat simple, no effective system signaling with the use of
microcontroller Arduino Uno. This project uses an ultrasonic sensor HC - SR 04 and signaling
devices (buzzer and light diode) to ensure safety.
Keywords:
Arduino Uno, ultrasonic sensor HC-SR04, system signaling, security, microcontroller,
buzzer, LED, distance measurement, automation, programming, electronics, monitoring and real
time, platform with open source code, sensor technology, economic solution.
Abstract:
In today's world, security systems have become an integral part of our lives. This
article explores how to create a simple yet effective alarm system using the Arduino Uno
microcontroller. The project utilizes the HC-SR04 ultrasonic sensor and signaling devices (buzzer
and LED) to ensure security.
Keywords:
Arduino Uno, HC-SR04 ultrasonic sensor, alarm system, security, microcontroller,
buzzer, LED, distance measurement, automation, programming, electronics, real-time monitoring,
open-source platform, sensor technology, cost-effective solution.
Introduction:
Security systems modern in life important place This
in the article Arduino
Uno microcontroller and HC-SR04 ultrasound sensor based on simple, but effective alarm system
system design theoretical basics seeing is issued. System object when approaching provides
audible and visual signals, ensuring safety provides.
Research Relevance :
Modern under the circumstances security systems private and public
property protection in doing important importance has. Technologies development with cheap,
effective and flexible alarm system to systems need increasing Arduino Uno microcontroller and
HC- SR04 ultrasound sensor based on alarm system system design economical solution as
security provide with together, electronics automation in the field innovative approaches to
develop service This will do. research open coded from platforms use through small business,
home farms and education institutions for comfortable alarm system systems create opportunity
gives. From this except for the project students and engineers for microcontrollers and sensors
with work according to practical skills in formation important place The research
relevance
security needs satisfaction, technological education development and cheap automation solutions
offer in doing manifestation will be.
Alarm system system external in the environment certain situations, for example, the object
approaching identify the user warning automated is a system. Alarm system Arduino Uno sensors
in the system coming information read to them corresponding signaler controls devices (buzzer,
LED). Arduino Uno is based on ATmega328P microcontroller based open coded microcomputer
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platform. It is simple electronic projects done increase for used in sensors, motors, displays and
other devices management opportunity Arduino Uno following to the features has :
Digital input / output pins: 14 (6 PWM output ) as used ).
Analog entrance pins: 6.
Power: 5 V ( USB) or 7-12 V external source via ).
Programming: is done using a language similar to C/C++ via the Arduino IDE.
A buzzer module is a small device used to produce a sound signal in electronic circuits, and is
widely used in Arduino projects, including alarm systems with the HC-SR04 sensor. There are
two main types: passive and active. A passive buzzer emits sounds of different frequencies via an
external signal, the tone and pitch are controlled by software, more flexible, but requires
programming. An active buzzer has a built-in oscillator, emits a constant sound when powered on,
simple, can only be turned on/off, and is often chosen for signaling. The operating voltage is
usually 3.3V or 5V, compatible with Arduino. The power consumption is low, 10-50 mA. In
passive buzzers, the sound frequency is from 100 Hz to 10 kHz, in active ones it is fixed, for
example, 2-3 kHz. The connection is 2 or 3 pins: VCC, GND, signal pin (for passive ones). Small
size, easy to fit on breadboards or project boards.
Project scheme
VCC pin of HC-SR04 sensor to Arduino's 5V pin, GND pin to Arduino's GND pin Connects to
the Trig pin. to pin 9 of the Arduino, the Echo pin and is connected to pin 10. Buzzer's anode (+)
pin to pin 8 of the Arduino, the cathode (-) pin To GND connected. LED's anode (+) pin 220-330
Ohm resistor through to pin 7 of the Arduino, the cathode (-) pin To GND connects.
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Software Maintenance
From Arduino IDE is used. The following code the system management for The code is from the
HC-SR04 sensor. distance measures and the object is closer than 50 cm If, the buzzer and LED
will be activated.
#define TRIG_PIN 9
#define ECHO_PIN 10
#define BUZZER_PIN 8
#define LED_PIN 7
void setup() {
pinMode (TRIG_PIN, OUTPUT);
pinMode (ECHO_PIN, INPUT);
pinMode (BUZZER_PIN, OUTPUT);
pinMode (LED_PIN, OUTPUT);
Serial.begin(9600);
}
void loop() {
long duration;
int distance;
digitalWrite (TRIG_PIN, LOW);
delayMicroseconds (2);
digitalWrite (TRIG_PIN, HIGH);
delayMicroseconds (10);
digitalWrite (TRIG_PIN, LOW);
duration = pulseIn (ECHO_PIN, HIGH);
distance = duration * 0.034 / 2;
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Serial.print (" Distance : ");
Serial.print (distance);
Serial.println ("cm");
if (distance < 50) {
digitalWrite (BUZZER_PIN, HIGH);
digitalWrite (LED_PIN, HIGH);
} else {
digitalWrite (BUZZER_PIN, LOW);
digitalWrite (LED_PIN, LOW);
}
delay(100);
}
Components using breadboard connects. Connections to the scheme appropriate caution with
done In the Arduino IDE new mirror opened, above code is entered and connected to the Arduino
USB cable via Arduino to computer Connects to the system. to work HC-SR04 distance when
lowered The buzzer sounds when the object approaches 50 cm. emits and the LED lights up. If the
distance exceeds 50 cm, the buzzer and LED turn off. The distance is monitored in real time via
the serial monitor. The system is tested: the object is brought closer or further away from the
sensor, and the buzzer and LED are checked for operation.
Conclusion.
Creating an alarm system using Arduino Uno and HC-SR04 ultrasonic sensor is a
simple but effective solution. The system provides security by giving an audible and visual signal
when an object approaches. This project is a great opportunity to learn electronics and
programming, and can be made more functional with various extensions.
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