Exploring the Phenomena of Sound and Electromagnetic Induction with

ExpEYES

Praveen Patil Subhash Desai

INDIA

An Open Source Portable Science Labwww.expeyes.inwww.expeyes.in

THEORY

Experiment

.. and it goes in circles.

Our Science Education

Why Experiments are ignored in our Science Education ?

● Exam Oriented Evaluation System ?

● Lack of interest ?

● Lack of Equipment ?

For the last reason ExpEYES is an answer.Works on any computer with USB port.

Coding in Python or C.

A python powered Open Source Portable Science Lab

A tool for learning by exploring.

Supports Science & Engineering experiments from High School to Post Graduate level.

A test equipment for electronics hobbyists.

All with Open Software & Hardware

What is expEYES ?

A low cost device that can generate/measure voltages

as a function of time and generate graphs.

It works with any Gnu/Linux PC,Laptop, many android tablets and phones.

The most affordable portable science lab

A Lab in your pocket

ExpEYES on Android Devices

Features:

● 12 bit Analog Input/Output

● Digital I/O

● Time interval measurements

● Waveform Generation

● USB Powered

● GUI for 50 experiments

● Python Programmable

● Works as a Test Equipment

● 8.6 x 5.8 x 1.5 cm3, 60 gm.

● Royalty-free

● Experimenter has the freedom to use the system at various levels of sofistication

● LEVEL I● GUI Programs

● LEVEL II● Writing programs using PYTHON Library

● LEVEL III● Micro-controller programming and

making stand-alone syatems–

Sensor Controllers

ExpEYES ComputerUSB

Design of expEYES JuniorReal-time measurement features of Micro-controller

+Computational and Graphics capability of Python.

import expeyes.eyesjp = expeyes.eyesj.open()from pylab import *t,v = p.capture(1, 200, 100)plot(t,v)show()

What is expEYES for

Students : An affordable tool for doing experiments,anytime anywhere. Freedom from the lab timings.

Teachers : A tool for doing demos, experiments and to develop new experiments.

Engineers : An open system that combines basic physics, electronics, micro-controller programming, computer interfacing, GUI programming and scientific computation.

Hobbyist : A nice tool to kill more time with less money.

2011 : ExpEYES, USB Powered, Higher resolution

2012 : expEYES JuniorMore compact, cheaper

GUI programs available for around 50 experiments

Example 1: Four channel CRO, in audio range

Interference of Sound

MIC

Buzzers

Sound and Waves with ExpEYES

Sound and Waves with ExpEYES

Frequency of Sound

Sound and Waves with ExpEYES

Frequency Response of Pizzo Buzzer

Sound and Waves with ExpEYES

Velocity of Sound in air

Sound and Waves with ExpEYES

Ultrasound

Pendulum, Nature of Oscillation

To study nature of oscillations of a pendulum.

Since angle encoders are expensive, we have used a DC motor

Exploring Electromagnetic Induction with ExpEYES

Electromagnetic Induction

Exploring Electromagnetic Induction with ExpEYES

AC Generator

Exploring Electromagnetic Induction with ExpEYES

Singing Magnet

The force experinced by a current carrying cunducter placed in a magnetic field is demonstrated by placing a permanent magnet

inside a solenoid and applying an AC signal to it.

And many more ...

Reducing total cost: cheaper computers.Tested on Raspberry Pi and Aakash2 and

many Android Tablets and Phones

More than 1500 units are in circulation.● Included in the syllabus in some Universities.

●Approached CIET NCERT for adding this in ICT curriculum.

● Trained around 300 physics teachers.● Conducted around 35 awareness programs

at different places.(Including Malayshia, Taiwan,Cambodia, Japan, France.....)

Every year IUAC conducts two “Six days training programs on PHOENIX”

Project Status

Phoenix at Lycée Jean Bart, France

Georges Khaznadar, Science teacher & Debian developer.Volunteers for PHOENIX Project

Our Goal

Make high quality laboratory equipment available to

every science student, by making it affordable.

Hardware Availibility

Many of the Control/Sensor elements are made from

components used in consumer electronics.

Interface + Standard Accessory Set + LiveCD

For details please visit....

http://expeyes.inhttp://expeyes.wordpress.com

Thank you