third eye of blind person, Lab Reports of Robotics

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Third Eye For Blind

Using NODEMCU

TEAM MEMBER :

Manish Dubey -

Mahesh kumar -

Himanshu Rajan-

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

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.

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!

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

resistors

Resistors 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.

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.

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.

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.

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.

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!

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.

Connection of ultrasonic with nodemcu(esp8266)

Connection of led, resistor with nodemcu(ESP 8266)