Human Detector

              Surveillance is an most important aspect in all over the places. Say (Banks, Jewelry shops, etc..). Now a days even a small hotels and bakery were using surveillance system to protect their properties.

             There are two types of surveillance system were available. They are,

• Passive surveillance system
• Active surveillance system

            Now our goal is to built a passive surveillance system which will detect the human trace when the system is fired. The materials required for this purpose are..

Hardware required...

• Any controller board (Arduino is recommended)
• Pyroelectric Infrared Sensor (PIR) ("HC SR-501")
• Servo motor (minimum torque 1.4Kg/m2.)
• 16x2 LCD module
• Light Emitting Diode (LED)
• Hookups
• Protoboard

Software required..

• Arduino IDE (If Arduino is used) Download Here

About Hardware..

         Controller board.

                Arduino is the one of the most leading controller board platform which provides the Learning environment for the Electronics Hobbyists and the students. There are lots of versions of Arduino board are available. But the common and the most Economical board is Arduino UNO r3.

                      It also provide a Integrated Development Environment to develop our own code and implement it.

AT MEGA 2560

Pyroelectric Infrared Sensor

                  PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use and don't wear out.

                          For that reason they are commonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Pyroelectric", or "IR motion" sensor.

                      Since its around 100 INR any people can afford it. And it could be implemented any where the user wanted.

PIR Sensor

Servo motor

             There are two types of Servo motors are naturally available. AC servo motor and DC Servo motor. For all electronic and embedded applications DC servo motor is used. Because the AC cannot be stored in the batteries.

                  A servo motor is as similar as normal DC motor but it additionally contains a feedback element and the electronics circuit. Feedback element sense the position of the shaft and it allows to move in particular manner.

                The PWM waves are implemented to drive the servo motor. It contains 3 Pins. Vcc, GND and Pulse. Its normally works on (5-12)V.

Micro Servo

LC Display

            Liquid Crystal Display is the most commonly used in Electronics projects. Because it have a characteristic to print all possible characters including numerical digits and the special characters too.

                Additionally it can't require any breakout board or drive. Its all embedded into it. So its easy to use. Here I have used 16x2 LC Display module.

LCD Module

Light Emitting Diode

                The most common and the growing up electronic component of the 21st Century is LED. When you turn around you can see a LED. It have a unique character, that its capable of working on both AC and DC.

                     Its cheap, Light weight, portable and capable of easily replaceable. So it came into picture now. And its a good indicator. Here we used LED for the Indication purpose.

Blue LED

Hookups and Protoboards

              They are normally a prototype building components which are used for the interconnection of the External Peripherals.

Hookups & Protoboard

 Let's move to Construction

                     With the help of the double sided tape just stick your servo and the PIR together as shown below. Make sure that the shaft of the motor rotates without any external disturbances.

Stuck together

        After done it. Do the circuit connections as shown in the following fig. Connect the circuit carefully to avoid the detection Errors.

Schematic

   After connecting the circuit. Your prototype will be like as shown. I hope so..

Complete prototype

   Now its time to Rock and Roll.. Just a single little work is have to done. Open your Arduino IDE and copy paste the code there..  After done it. Directly upload to it to your board.

Arduino IDE

  Take a look @ this.. Its pretty good.

Working Prototype.

                       In this moment I want to thank you my friend (Bulky)  who motivated to do this kind of work. And most importantly I have to show my special thank to my dear friend (Singer) who provided the Camera. Hope you people enjoyed.

Click & Enjoy

Thank you for your Time

Don't forget to raise you Thumb's up

Feel free to contact me @ abu786sagar@gmail.com

Obstacle Detection

         The Obstacle detection is the one of the most necessary process in any modes of Transportation. For example in ships, they uses SONAR and RADAR to find the upcoming obstacle. Likewise in Air force they uses RADAR.

        Today, I'm going to share the most interesting project called Obstacle Range Measurement. One more important thing is, its going to find the range without being in physical contact to it.

List of Hardware...

• Arduino Controller (Any Version applicable)
• Ultrasonic sensor (HC-SR04)
• 16x2 LC Display Module
• Hookups
• Protoboard
• Light Emitting Diode

About Hardware Used.

      Arduino AT MEGA 2560

                         Arduino is an open source hardware/software development board which is mainly came into picture because of it's physical design and economical worth.  

                    

                        The Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator.

                        USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. 

                    The Mega 2560 board is compatible with most shields designed for the Uno and the former boards Duemilanove or Diecimila.

AT MEGA 2560

Ultrasonic Sensor (HC-SR04)

                    Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit.

HC-SR04

16x2 LC Display Module.

                 LCD stands for Liquid Crystal Display. Its an Electronic display which is used to display the Characters, Numbers and Emoji too... This display is preferred over the Seven Segment display because of it's Economical issues and Special characters Limitation.

LCD Module

Hookups and Protoboard.

              Hookups are the jumper wires which are you to inter connect the External peripheral to the Controller and the another peripherals.

              Protoboard (Usually Breadboard) is an typical Parallel and Serial conducting board which is used to test your prototype. It contains (1-60) Rows and (A-J) Columns of 1mm hole each.

Hookups and Protoboard

Light Emitting Diode (LED)

                   A Light emitting diode (LED) is essentially a pn junction diode. When carriers are injected across a forward-biased junction, it emits incoherent light. 

                   The LED is mainly used in the circuit to acknowledge the changes occurred in the particular area of the circuit to the End User.

                   There are several types and the several colors of LED's are available in the home market.

LED

Working...

                    Its actually very simple. :-) Just make the connection as shown in the below fig.

Circuit

     

                 After connecting your peripherals to the circuit. It'll look like this.

Peripheral connected complete circuit

        After this will done. You have do one last job is uploading the program to your controller board.  Just copy and paste the program in your Arduino IDE

IDE Window

            Hoo.. Your wait is now Complete. Now you can measure the distance of the obstacle in front of you without being in physical contact in it. 

            The glowing LED shows that there is no obstacle on your way, So it acknowledge you that you'll be free by indicating in GREEN.

Obstacle Finder

Click to Watch

Thank you for your Time

Feel free to contact @abu786sagar@gmail.com