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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
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
