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Arduino and Gsm based laser security alert system programming

 

laser security system

Description:

This tutorial is based on the Arduino and GSM sim900A unit Laser Security system. This tutorial demonstrates step by step how to use the Arduino, LDR and sim900A GSM module to build your own GSM-based laser security system. Arduino Uno or Mega will perform the main processing. We will make our own circuit based on LDR’s light resistor for laser detection.’

This project can be easily modified by incorporating other sensor styles such as:

ground sensors

 PIR Sensor 

Magnetic Reed, etc.



The Amazon purchase links are given in the description.

GPS module: https://amzn.to/2Qsdh5N
Sim900A: https://amzn.to/2QaHuXb
Arduino Uno: https://amzn.to/39aq6ZT
Mega 2560: https://amzn.to/2SszMsI
lm7805 Voltage Regulator: https://amzn.to/2ERYoTJ
330-ohm resistors pack: https://amzn.to/2Qj1Igg
female DC power jack socket: https://amzn.to/377Pg9M
470uf capacitors: https://amzn.to/2MrN3xR
5√ó7 cm Vero board: https://amzn.to/37b7KWO
female headers: https://amzn.to/350w6RE
connection wires: https://amzn.to/2MvOJXd
Super Starter kit for Beginners: https://amzn.to/398dliF
Jumper Wires: https://amzn.to/2SrnBwo
Bread Board: https://amzn.to/2MxV5FM
12v Adaptor: https://amzn.to/2MuOlZk
PCB plate: https://amzn.to/2MuwNMB
Variable Supply: https://amzn.to/39d0KdP
Digital Multimeter: https://amzn.to/34WbVoa
Vero Board / stripboard: https://amzn.to/39nL9Zg
Soldering iron kit: ‚Äúbest‚ÄĚ You guys should definitely purchase this: https://amzn.to/2PVwexF
Solder wire: https://amzn.to/2QlOvTS
Wire Stripper: https://amzn.to/353tYJa
wirecutter: https://amzn.to/2tV2lFj
PCB small portable drill machine: https://amzn.to/2MvQqnx

DISCLAIMER:

Please Note: these are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

SIM900A gsm Module:

laser security system

There¬†are¬†many¬†different¬†types¬†of¬†GSM¬†modules¬†but¬†I’m¬†using¬†Sim900A¬†if¬†you¬†want¬†to¬†use¬†any¬†other¬†gsm¬†module,¬†like¬†sim900D¬†I¬†checked¬†the¬†same¬†programming¬†with¬†different¬†baud¬†rate¬†on¬†sim900D¬†and¬†the¬†rest¬†of¬†the¬†program¬†remains¬†the¬†same.

When the voltage is applied because the GSM sim900A module does not have an integrated voltage regulator as you can see on the monitor. The optimal voltage for this GSM device is 4.7v but you can also link it to a 5v adapter. If you don’t have a 5v adaptor, you can use a lm317 t variable voltage regulator to make your power supply. There¬† are¬† so¬† many¬†pins¬†in¬†the¬†GSM¬†module,¬†as¬†you¬†can¬†see¬†clearly¬†in¬†the¬†picture¬†above,¬†but¬†we¬†use¬†only¬†5,¬†the¬†power¬†supply¬†pins,¬†GND,¬†Rxd¬†5v,¬†and¬†TXD¬†5v.¬†The¬†GND¬†is¬†connected¬†to¬†the¬†Arduino¬†GND,¬†the¬†Arduino¬†pin8¬†is¬†connected¬†to¬†the¬†TXD¬†and¬†the¬†Arduino¬†pin8¬†is¬†connected¬†to¬†the¬†RXD.

laser security system Circuit Diagram:

laser security system

The¬†sim900A’s¬†Tx¬†is¬†connected¬†to¬†the¬†Arduino’s¬†pin¬†number¬†7,¬†the¬†sim900A’s¬†Rx¬†pin¬†is¬†connected¬†to¬†Arduino’s¬†pin¬†number¬†8,¬†and¬†GND¬†is¬†connected¬†to¬†the¬†Arduino’s¬†floor.¬†An¬†optimal¬†voltage¬†of¬†4.7v¬†to¬†5v¬†is¬†connected¬†to¬†the¬†sim900A¬†power¬†supply¬†as¬†described¬†above.

In series, an LDR is connected to a 10k resistor making a circuit for the voltage divider. As you know, an LDR is simply a variable resistor that adjusts its resistance with the amount of light falling on the LDR. Thus a resistance change will result in a voltage change. This voltage shift can be tracked using the Arduino’s analog pin A1.


laser security system Programming:

Watch Video Tutorial

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2 Comments

  1. I need a laser based security system using gsm module, IR sensor and Arduino project { mainly I need Circuit diagram & code}

    1. bro, i already replied to your comment on my Youtube channel, “Electronic clinic”. I have already did this project, it’s available on https://www.electroniclinic.com/
      all you need open my other website make a search, you will get all the related projects with circuit diagrams and codes.

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