LASER SECURITY SYSTEM USING ARDUINO

COMPONENTS DETAILS -

ARDUINO NANO

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one

TECH SPECS -

Microcontroller = ATmega328

Architecture = AVR

Operating Voltage = 5 V

Flash Memory = 32 KB of which 2 KB used by bootloaderSRAM2

KBClock Speed16 MHz

Analog IN Pins = 8

EEPROM = 1 KB

DC Current per I/O Pins = 40 mA (I/O Pins)

Input Voltage = 7-12

VDigital I/O Pins = 22 (6 of which are PWM)

PWM Output = 6

Power Consumption = 19 mA

PCB Size = 18 x 45 mm

Weight = 7 g

ARDUINO NANO PRODUCT LINK -

https://www.banggood.in/ATmega328P-Nano-V3-Module-Improved-Version-With-USB-Cable-Development-Board-p-933647.html?akmClientCountry=IN&p=VS162312352724201707&custlixnkid=578551&cur_warehouse=CN

LASER MODULE

Laser module link of the product -

https://www.banggood.in/EleksMaker-Laser-Module-Red-Laser-Line-Generator-Diode-Engraving-Machine-Parts-p-955966.html?p=VS162312352724201707&custlinkid=578552&cur_warehouse=CN

LDR (LIGHT DEPENDENT RESISTOR)

A Light Dependent Resistor (LDR) is also called a photoresistor or a cadmium sulfide (CdS) cell. ... It is basically a photocell that works on the principle of photoconductivity. The passive component is basically a resistor whose resistance value decreases when the intensity of light decreases.

LDR PRODUCT LINK -

https://www.banggood.in/20Pcs-5MM-Light-Dependent-Resistor-Photoresistor-GL5528-LDR-p-943459.html?rmmds=search&cur_warehouse=CN

DC POWER JACK

DC POWER JACK PRODUCT LINK -

https://www.banggood.in/50pcs-DC-005-3Pin-Black-DC-Power-Jack-Socket-Connector-5_52_1mm-p-1127042.html?p=VS162312352724201707&custlinkid=578550&cur_warehouse=CN

BUZZER

BUZZER PRODUCT LINK -

https://www.banggood.in/3-24V-Piezo-Electronic-Tone-Buzzer-Alarm-95DB-Continuous-Sound-p-919348.html?p=VS162312352724201707&custlinkid=578549&cur_warehouse=CN

CIRCUIT DIAGRAM -

CODE -

const int photo = 3; const int BUZZ = 9; void setup() { //Pin Configurations //Outputs pinMode(BUZZ, OUTPUT); digitalWrite(BUZZ, LOW); //Inputs pinMode(photo, INPUT_PULLUP); } void loop() { //if/else loop checks if photoresistor is high or low if(digitalRead(photo)==HIGH){ digitalWrite(BUZZ, HIGH); }else{ digitalWrite(BUZZ, LOW); } }