ESP32 CAM LASER SECURITY SYSTEM

Chapter 01

Introduction

Need of security is the basic necessity of any individual. The feeling that we are safe and
everything around us is all right is imperative for a peaceful living. But in this unsafe world, when
crime, terror and threats are on their peak, how can one attain that sense of security? Here, laser
security system provides us with a solution and for this reason more and more people are installing
them in order to stay safe and secure.
Various electronic security systems can be used at home and other important working places
for security and safety purposes. Laser Security alarm is a device used for security purposes. It has a
wide application in fields of security and defence starting from the security of simple house hold
material to a very high valued material of an organization.

They once used to be expensive solutions for security needs. Owing to cost cutting and fast
technological advancements, this form of security system is becoming more affordable. Lasers differ
from other light sources in a few significant ways. There are two features that are important for security
systems. Unlike a light bulb or flashlight, laser light doesn't spread out, it is a narrow beam. And laser
light is essentially a single colour. Because laser light doesn't spread much, it can be sent it a long way
and still have enough energy in a small area to trigger the security system detector.

Because it's a single wavelength, it can put a blocking filter on the detector to let laser light
through without letting background light onto the detector.

1|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 02

Block Diagram

LEASER Module UART(TTL)

& LDR Module

ESP32CAM

Connect using Blynk Blynk App

Libraries and Project

Fig. block diagram ESP32CAM

2|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 BLOCK DIAGRAM DESCRIPTION:

In this block diagram I will shows how to work the project in a simple method. In he project
the main part is controller that is ESP32CAM. I will connect different peripherals to the ESP32CAM.
There is two input peripherals to the ESP32CAM that is LEASER Module & LDR Module which
gives the input signal to the ESP32CAM with respect to the input signal the ESP32CAM operates
the output peripherals that is UART (TTL) When LEASER Module will detect the human near the
dustbin it will give signal to the ESP32CAM.

Laser module emits a signal static laser beam of signal or multiple wavelength or colour the
LDR sensor module is used to detect the presence of light &measure intensity of light. the output is
high in presence of light & low absence of light.

 COMPONENT USE IN PROJEST:

 ESP32-CAM
 LASER MODUL
 UART(TTL)
 LM393 LDE Module
 Connecting Wire
 Mirror
 SD card
 USB Cable
 Blynk app

3|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 03

Circuit diagram

Fig.(A)

Fig.(B)

4|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 04

Introduction of ESP32 CAM

Fig: ESP32 CAM

The ESP32-CAM is a small size, low power Consumption camera module based on ESP32. It comes with an
OV2640 camera and provides onboard TF card slot. The ESP32-CAM can be widely used in intelligent IoT applications
such as wireless video monitoring, WiFi image upload, QR identification, and so on.

5|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Fig. of board
It is an ideal solution for IOT application, prototypes
constructions

6|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 PIN DIAGRAM :

 Pin Description:
 GPIO 15: CMD
 GPIO 14: CLK
 GPIO 2: Data 0
 GPIO 4: Data 1 (also connected to the on-board LED)
 GPIO 12: Data 2
 GPIO 13: Data 3

7|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 Features:
• The smallest 802.11b/g/n Wi-Fi BT So C module
• Low power 32-bit CPU ,can also serve the application processor
• Up to 160MHz clock speed, summary computing power up to 600 DMIPS
• Built-in 520 KB SRAM, external 4MPSRAM
• Supports UART/SPI/I2C/PWM/ADC/DAC
• Support OV2640 and OV7670 cameras, built-in flash lamp
• Support image Wi-Fi upload
• Support TF card
• Supports multiple sleep modes
• Embedded Lwip and Free RTOS
• Supports STA/AP/STA+AP operation mode
• Support Smart Con fig/Air Kiss technology
• Support for serial port local and remote firmware upgrades (FOTA)

8|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 05

Hardware description

 Laser Module :

Fig: laser module

In the laser display industry the term “ laser module” stands for a device that emits a single static
laser beam of single or multiple wavelengths - or colours if we talk about the visible spectrum of light. The
LASER MODULE 650NM 5V head is composed of a light- emitting tube, condenser lens, and adjustable
copper sleeve and it is assembled when delivered, the focal length of the lens is adjusted glued by strong
glue stick, which can work directly after connecting to a 5V DC power supply.A laser diode is usually a
three terminal device: a common point, a supply pin for power to the laser diode itself, and a photodiode
output for feedback.

Photosensitive sensor module is the most sensitive for the environmental light intensity and it is
generally used for detecting the ambient brightness and intensity of the environment. Without light intensity
it will not reach the threshold resulting for low level output but, when the external environment light intensity
exceeds the set threshold it will result for a high level output. The output is directly connected with the
microcontroller, for the microcontroller to detect the light level, thereby to detect environmental intensity
change. Small digital output can directly drive the relay module, which can be composed of a photoelectric
switch. Small analog output, through the AD conversion, can obtain more accurate numerical value of
environmental light intensity.

We need to connect the LDR sensor module to a 5v power supply. Then set the threshold voltage at
the Non-Inverting input (3) of the IC according to the present light intensity by rotating the preset knob for
setting the sensor sensitivity. LDR (light dependent resistance) can be very easily tested by using a digital
multimeter.

9|Page
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 Specifications:
• Input Voltage: 3.3V-5V
• Output: Analog voltage form Digital Switching form
• Main chip: LM393 Photosensitive sensor
• Output can be directly connected to the microcontroller I/O port.
• The sensitivity of the signal detection can be adjusted
. Reserve a line voltage to compare circuit
. PCB size: 30mm x 15mm

 UART (TTL) :

fig. UART (TTL)

UARTs transmit one bit at a time at a specified data rate . This method of serial communication is
sometimes referred to as TTL serial (transistor- transistor logic). Serial communication at a TTL level
will always remain between the limits of 0V and Vcc, which is often 5V or 3.3V. A UART is usually an
individual or part of an integrated circuit (IC) used for serial communications over a computer or
peripheral device serial port. Devices probably using UARTs to communicate with the computer. UART
stands for Universal Asynchronous Receiver/Transmitter. It's not a communication protocol but a
physical circuit in a microcontroller, or a stand-alone IC.
A UART's main purpose is to transmit and receive serial data.

10 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 Pin diagram:

11 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 Features:
• Original FTDI FT232 chip, stable performance
• RXD/TXD transceiver communication indicator
• With power, sending, receiving indicator, working status LED indicators
• With 3.3V and 5V TTL Level supply options.

 Blynk app:

Blynk is a Platform with iOS and Android apps to control Arduino, ESP32-CAM and the likes over the
Internet. It's a digital dashboard where you can build a graphic interface for your project by simply dragging
and dropping widgets Blynk is a hardware-agnostic IoT platform.

12 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 06

APPLICATIONS LIMITATIONS

 APPLICATIONS:

o This system can be installed in the entry points like doors and window since laser rays
can travel long distances and are almost invisible.
o The system can be installed at high alert areas where trespassers are not allowed .
o Can be used for defense purposes where high security is needed.
o Security of home and personal possessions.
o The idea of securing the border from illegal entries, smuggling of weapons.


 LIMITATIONS:


o The laser security system works only if the laser is obstructed. If the intruder passes
without obstructing the laser, it is considered as a failure.
o In order to secure a larger area, we need more lasers and corresponding sensors.
o It can be tracked when you are not in your home with automatic messaging service
& capturing images & sending them to your mobile phones.

13 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 07

Result, future scope & conclusion

 RESULT:
It is simple prototype which ensures proper safety and security of the house the prototype constitutes
ESP32CAM, LM393 LDR Module , Laser Module , UART TTL. And a dc adapter for power source .
Hardware configuration of the laser system- Simply the emitter emits the laser line and the LDR Receives the
bright striking laser light. The setup of the main circuit
- As per his/her convenience the laser line can be extended with the help of small mirrors as mirrors
perfectly reflect the laser lines. The laser ray is discontinued by the intruder – As soon as the intruder tries to
enter the monitored entrance, the laser circuit breaks and a loud buzzer starts buzzing very loudly with just a
delay of a few nanoseconds. The message alert is sent to the Blynk App – Then a fixed spy camera takes the
photo of the intruder and sends it to the to the app for proof.

 FEATURES:

 Easy to installation and low maintenance.

 Full automatic, save man power .
 Consume very low energy and provides flexibility in operations.



 FUTURE SCOPE:

LASER (light amplification by stimulated emission of radiation) was a technological breakthrough.

Low power lasers are low frequency lights passed through a converging lens thats makes it an almost straight
line. If they were made truely straight, then we would not see the beams.
Anyways, lasers (both lo and hi powers) are very important. Low power lasers can act as a pointer or
a guide. And high power lasers can cut trough materials. And in a very fine line. Lo power lasers can work
as security threads. Where a single beam will pass through many parts of a room. Any obstacle will reduce
the amount of light received and CCTV cameras will turn on, and by analyzing the image, the appropriate
alarms will turn on. And basically lasers will be an integral part of high end cost and energy efficient
surveillance systems. They will be part of communication systems. A car might have a few beams of lasers
to monitor any upcoming collisions. Or maybe streets have lasers to turn on CCTV by motion sensing.

14 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

 CONCLUSION:

Laser security system provide us the security against any crime, theft in our day to day life and so
people are installing they safe , secure and sound. Various electronic security can be used at home and other
important working place for security and safety purpose . It is a great opportunity and source of saving man
power contributing no wastage of electricity . the “leaser Security System” is an important helping system .
Using this system robbery, thefts & crime can be avoided to large extend. Avoiding thieves result in the safety
of our financial assets and thereby this system provides us protection against all.
The Laser & LDR module with ESP32 CAM system is highly sensitive with a great rang roe
working . The system senses the light emitting by the Leaser falling the over the LDR connected with circuit .

15 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

Chapter 08

REFERENCE

 BOOKS:

 Laser security system.

 Principle of internet of things.

 WEBSITES:
 https://www.electronicshub.org/laser-security-system
 https://www.ijser.org/researchpaper/Laser-Security-System
 https://www.viralsciencecreativity.com/post/esp32-cam-laser-security-
system-blynk
 https://randomnerdtutorials.com/esp32-cam-video-streaming-face-
recognition-arduino-ide/
 https://www.evelta.com/esp32-cam-camera-module-based-on-
esp32/#:~:text=The%20ESP32-CAM
 https://www.engineersgarage.com/knowledge_share/max232-pin-out-
and-description/

16 | P a g e
MSBEC, LATUR
ESP32 CAM LASER SECURITY SYSTEM

17 | P a g e
MSBEC, LATUR