Difference between revisions of "Saurabh Kushwaha"

Revision as of 15:03, 12 March 2017

Introduction

Humans always try to extend their limit of sensing the surrounding or a system, through different means of tools. Sensors are one of those tools which humans use to extend their limits of sensing. Now those sensor can use in the probes or in detectors to gather information or work on a certain activity. The term science always fascinated me, the experiments, achievements, laws, possibilities and many more shows me that there could be a future with full of amazing concepts. I love to do experiments and excited to show my concepts in science fairs. I mostly use tools which can be operated manually like I made hydraulic crane, color changing fountain, oil trapping filter, creating fog in a bottle and many more. But all these tools need someone to operate manually because in high school i don't know about Arduino or sensors like LDR or Air pollution sensor,[1] like this in my school or never heard of it.

Detector

A device for detecting the presence of electromagnetic waves or of radioactivity

Sensors

Basic

a Sensor is an electronic component, module, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor. A sensor is always used with other electronics, whether as simple as a light or as complex as a computer.

Simulation through Sensor

Simulating a situation through the help of a sensor is not kind of difficult, but when you have little information about Arduino and sensors then might yes, it’s kind of difficult because it’s my first time combining Unity with Arduino. As I wanted that my audience can able to play a video game without touching the keyboard. As I know how to make simple games on Unity, I decided to make my own game and then take a sensor and combine its input as a character controller. Ping Pong is one of those classic games which used to play a lot in 90s and we still love to play it. By using Unity, I make a replica of that game with some twist and as an input data I used Ultrasonic sensor. Ultrasonic sensor act like a Bat in the game, by bring the hand closer and further you can change the position of the bat for hitting the ball.

ECG Sensor

The AD8232,[2] is a neat little chip used to measure the electrical activity of the heart. This electrical activity can be charted as an ECG or Electrocardiogram. Electrocardiography is used to help diagnose various heart conditions.

Arduino Based ECG (Electrocardiography) sensor

Understanding the ECG

In general terms, lets look at what an ECG is representing and how we’re able to sense it. The ECG is separated into two basic Intervals, the PR Interval and the QT Interval,

PR Interval

The PR interval is the initial wave generated by an electrical impulse traveling from the right atrium to the left. The right atrium is the first chamber to see an electrical impulse.

QT Interval

The QRS is a complex process that generates the signature “beep” in cardiac monitors. During QRS both ventricles begin to pump.

Connecting the Hardware

Hardware :

1)Arduino Uno/Mega/Nano 2)ECG Module (AD8232) 3)ECG Electrodes - 3 pieces 4)ECG Electrode Connector -3.5 mm 5)Power supply 6)Connecting Wires

Software Requirement :

Arduino IDE Pin Connections Arduino 3.3V--------Sensor 3.3V pin

Arduino pin 10-------L0+

Arduino pin 11-------L0-

Arduino (A1)--------Output

Arduino Gnd --------Gnd

Connecting Headers to the Board

Follow the diagram below, to make necessary connections.

Uploading the Sketch

The example sketch can be found here.

Turbidity Meter

Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.

Concept

The turbidity of water creates a blockage for the light which passing through it. This deflection of light which passing through the sample water determines how much the water is clear.

Hardware Requirements:

LDR Sensor

Light Source (Laser Beam)

Resistor

Arduino

Connecting Wire

Cup

Bread Board

Software Requirement:

Arduino IDE

Connection of LDR with Arduino:

Arduino Program:

Reading: