exploring the phenomena of sound and electromagnetic ... expeyes.pdf · exploring electromagnetic...
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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
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THEORY
Experiment
.. and it goes in circles.
Our Science Education
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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.
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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 ?
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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
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A Lab in your pocket
ExpEYES on Android Devices
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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
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● 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
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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()
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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.
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2011 : ExpEYES, USB Powered, Higher resolution
2012 : expEYES JuniorMore compact, cheaper
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GUI programs available for around 50 experiments
Example 1: Four channel CRO, in audio range
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Interference of Sound
MIC
Buzzers
Sound and Waves with ExpEYES
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Sound and Waves with ExpEYES
Frequency of Sound
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Sound and Waves with ExpEYES
Frequency Response of Pizzo Buzzer
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Sound and Waves with ExpEYES
Velocity of Sound in air
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Sound and Waves with ExpEYES
Ultrasound
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Pendulum, Nature of Oscillation
To study nature of oscillations of a pendulum.
Since angle encoders are expensive, we have used a DC motor
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Exploring Electromagnetic Induction with ExpEYES
Electromagnetic Induction
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Exploring Electromagnetic Induction with ExpEYES
AC Generator
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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.
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And many more ...
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Reducing total cost: cheaper computers.Tested on Raspberry Pi and Aakash2 and
many Android Tablets and Phones
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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
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Phoenix at Lycée Jean Bart, France
Georges Khaznadar, Science teacher & Debian developer.Volunteers for PHOENIX Project
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Our Goal
Make high quality laboratory equipment available to
every science student, by making it affordable.
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Hardware Availibility
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Many of the Control/Sensor elements are made from
components used in consumer electronics.
Interface + Standard Accessory Set + LiveCD
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For details please visit....
http://expeyes.inhttp://expeyes.wordpress.com