Third Eye For Blind.pptx

iot

1. Third Eye For Blind Using NODEMCU TEAM MEMBER : Manish Dubey - 12115178 Mahesh kumar - 12115290 Himanshu Rajan- 12115148 Himanshu Sharma - 11804100

2. Third Eye For Blind Third eye for blinds is an innovation to help blind people to navigate with greater comfort, speed and confidence, while making use of ultrasonic waves to detect nearby obstacles and to notify the user through vibrations and beeps of a buzzer. The idea was inspired from bats, which also use sound waves of high frequency to move. According to an estimate, there are 285 million visually impaired people in the world. The loss of one ,the most important human senses causes them a lot of hardships in daily life. The affected ones have been using the traditional white cane for many years which although being effective, still has a lot of disadvantages. Another way is, having a pet animal such as a dog which is not very common, for being comparatively expensive. So the aim of this project is to develop a new, cheap, yet more efficient way to help the visually impaired navigate with more speed and confidence. Introduction

3. COMPONENTS REQUIRED FOR THIRD EYE FOR BLIND NodeMcu (ESP 8266) Ultrasonic Sensors LEDs Resistors(1000 ohm ) Jumper cables Breadboards Buzzers Vibrating Motor Toggle switch L.C.D Display

4. NodeMCU (ESP-8266) The NodeMCU ( N ode  M icro C ontroller   U nit) is an open-source software and hardware development environment built around an inexpensive System-on-a-Chip (SoC) called the ESP8266. The ESP8266, designed and manufactured by Espress if Systems, contains the crucial elements of a computer: CPU, RAM, networking ( WiFi ), and even a modern operating system and SDK. That makes it an excellent choice for Internet of Things (IoT) projects of all kinds.

5. Ultrasonic Sensors(HC-SR04) The HC-SR04 Ultrasonic Distance Sensor is a sensor used for detecting the distance to an object using sonar. It's ideal for any robotics projects your have which require you to avoid objects, by detecting how close they are you can steer away from them! 

6. Ultrasonic Sensors(HC-SR04) Working It all starts when the trigger pin is set HIGH for 10µs. In response, the sensor transmits an ultrasonic burst of eight pulses at 40 kHz. This 8-pulse pattern is specially designed so that the receiver can distinguish the transmitted pulses from ambient ultrasonic noise. These eight ultrasonic pulses travel through the air away from the transmitter. Meanwhile the echo pin goes HIGH to initiate the echo-back signal.

7. LEDs These LED are used for control the traffic in all four direction.

8. resistors R esistors resist the flow of electricity and the higher the value of the resistor, the more it resists, and the less electrical current will flow through it. We are going to use this  to control how much electricity flows through the LED and therefore how brightly it shines .

9. Resistors Working Any material (except superconductors) will resist the flow of current. If it is a conductor, the resistance to the flow of current is less and vice versa for an insulator. A Resistor works by using this natural property of resistivity/conductivity of any material. It absorbs energy from the flow of electrons (electric energy) and dissipates in the form of heat (thermal energy).

10. Jumper cables Jumper wires are simply wires that have connector pins at each end, allowing them to be used to connect two points to each other without soldering. Jumper wires are typically used with  breadboards  and other prototyping tools in order to make it easy to change a circuit as needed .

11. Breadboards Breadboard is a way of constructing electronics without having to use a soldering iron. Components are pushed into the sockets on the breadboard and then extra 'jumper' wires are used to make connections.

12. Buzzer A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). Typical uses of buzzers and beepers include  alarm devices, timers, train and confirmation of user input such as a mouse click or keystroke .

13. Buzzer Working The working principle of a buzzer depends on the theory that, once the voltage is given across a piezoelectric material, then a pressure difference is produced. A piezo type includes piezo crystals among two conductors. Once a potential disparity is given across these crystals, then they thrust one  conductor  & drag the additional conductor through their internal property. So this continuous action will produce a sharp sound signal.

14. Vibrating Motor The first vibrator motor was developed in the year 1960 which are used for product massaging, but  the motor  development has taken a new twist in the year 1990 as users need vibration calls on their cell phones. At present, the motor designers, as well as users, have discovered from mobile phones, that mobile alerting with vibration is an outstanding technique to alert mobile operators to an incident. Nowadays, small vibrating motors are used in a wide range of applications like scanners, tools,  GPS trackers , control sticks, and medical instruments. These motors are also the main actuators for force feedback which is an economical method to enhance the value of a product.

15. Vibrating Motor Working Vibration motor is a coreless DC motor  and the size of this motor is compact. The main purpose of this motor is to alert the user from receiving the call by without sound/vibrating. These motors are applicable for different applications like pagers, handsets, cell phones, etc. The main feature of this motor is, it has magnetic properties, lightweight, and motor size is small. Based on these features, the motor performance is highly consistent. The configuration of these  motors  can be done in two varieties one is coin model and another one is a cylinder model. The vibrator motor specifications mainly include type, max operating torque, max.centrifugal force, weight range, rated current and output.

16. Toggle switch The  Push Button  is a electronic component that connects two points in a circuit when you press it. We use these little buttons on everything!

17. LCD NodeMCU is a microcontroller board used to develop IoT projects with a built-in wifi module.  A 16×2 LCD can display 16 alphanumeric characters in a single line and it has a total of two lines only .

18. LCD Working You can use our article on the  I2C scanner  to check the address of the I2C module you are using. We are able to display the text on the LCD by using the print function and passing the content which is going to be displayed as the parameter value of the function. Lcd with nodemcu I2C  communication is easy to implement. Set the location of the content by using the set cursor function. You can change the content as per your need by modifying the given code. You can also check out our project on  lcd with potentiometer  and  lcd with I2C modulle .

19. Connection of ultrasonic with nodemcu (esp8266)

20. Connection of led, resistor with nodemcu (ESP 8266)

21. Circuit Diagram of Third Eye of Blind with nodemcu

22. Working of project

23. CONCLUSION Thus, design and architecture of the project is anew concept of Arduino based Virtual Eye for the blind people. It is a simple, light weight machine, cheap, efficient, easy to carry, configurable , easy to handle electronic system with amazing properties and advantages is proposed to provide constructive assistant and support for the blind persons. It is able to scan , sence and detect the obstacles in the areas like left, right, and in front of the blind person regardless of its height or depth. so, with the help of our device the blind person can walk with confidence and without any problem.

24. Future Scope The wearable technology for blinds resolves the existing technical problems. Nowadays, there are many instruments and intelligent devices for visually impaired people for navigation. Still, most of them have specific issues with carrying, and the major drawbacks are those that need a lot of training to use. One of the main peculiarities of this innovation is that it is affordable for everyone. There are no such devices available in the market that can be worn like cloth and have such a low cost and simplicity. When used on a large scale, with improvements in the prototype, it will drastically benefit the community. The prototype device has the following features: ➢ It is a wearable technology for blinds. It uses ultrasonic waves to detect obstacles. It notifies the blocks/obstacle by vibrations and a buzzer sound.