Monday, 25 January 2016

The SMS Home Security System

For step by step instructions, visit:



Are you worried of the valuables that you have at your home when you're out on a trip or at your office? If yes, then this project is just for you! A security system which on detecting the presence of a human at your house will text you wherever you are that there's a problem. That sounds good, isn't it? Well, this is what this project does.
The project uses the 'multi-talented' Linkit ONE as it's brain. When a PIR motion sensor connected to this board detects some kind of motion, through it's GSM feature, the board sends you a text message. The best thing about this project is that it can be completed within 1-2 hours and no soldering or drilling is required to make it. This makes this project a great way to get started with Mediatek LinkIt One.
Parts and Tools required:
The following parts and tools are required to make this project. The total cost was around $70 or 4200 INR. The best part is that no soldering skills are required to make this project. All the parts can be found over online stores one of them being seeedstudio.
  • 1x LinkIt ONE board
  • 1x Lithium battery to power your board (included in the Linkit one kit)
  • 1x GSM antenna (included as well)
  • 1x PIR motion sensor
  • 1x Sim card (shouldn't be pin locked)
  • 1x 5v adapter (optional)
  • Male to female jumper wires
  • A suitable enclosure for your project
  • Hot glue gun w/glue sticks
  • Drill (not mandatory)

How it Works?

The process is quite simple. When a human approaches in front of the sensor or the security box, the motion sensor gives a high output which is detected by Linkit one. Through it's GSM feature, it will text you that a human was detected at your house at that time so you can take a suitable action at that very moment. The best part is that you will get a message through this box no matter in which corner of the world you are! The only condition is that there should be a mobile network available at that place. Now don't expect that this would also work on mars :P
The sensor that is used to detect motion of a human being is called PIR motion sensor which stands for Passive infra-red. It works with the fact that every human (actually everything) in this world emits a certain amount of infra-red radiations which is detected by this sensor. It gives a high output which remains high for some time under such condition. The range of this sensor is around 6m which is pretty sensitive and can be varies though a preset present on it.
Photo gallery:

For step by step instructions, visit:

1 comment:

  1. home automation technology, complete home security systems, home security decoys, Bosch alarms