Difference between revisions of "ExpEYES/C2/Communicating-to-ExpEYES-using-Python/English"
From Script | Spoken-Tutorial
(Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Communicating to ExpEYES usi...") |
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* Introduction to Python | * Introduction to Python | ||
| − | * Measure AC voltage using Plot window & Python | + | * Measure AC voltage using Plot window & '''Python''' |
| − | * Generate a Sine wave | + | * Generate a '''Sine wave''' |
| − | * Measure external and internal voltages using Python | + | * Measure external and internal voltages using '''Python''' |
| − | * Measure capacitance & resistance using Plot window & Python | + | * Measure '''capacitance''' & '''resistance''' using Plot window & '''Python''' |
| − | * Generate a Square wave | + | * Generate a '''Square wave''' |
* Show connections & circuit diagrams | * Show connections & circuit diagrams | ||
|| In this tutorial we will learn: | || In this tutorial we will learn: | ||
| − | * Introduction to Python | + | * Introduction to '''Python''' |
| − | * Measure AC voltage using Plot window and Python | + | * Measure AC voltage using Plot window and '''Python''' |
| − | * Generate a Sine wave | + | * Generate a '''Sine wave''' |
| − | * Measure external and internal voltages using Python | + | * Measure external and internal voltages using '''Python''' |
| − | * Measure capacitance and resistance using Plot window & Python | + | * Measure '''capacitance''' and '''resistance''' using Plot window & '''Python''' |
| − | * Generate a Square wave | + | * Generate a '''Square wave''' |
* Show connections and circuit diagrams for our experiments. | * Show connections and circuit diagrams for our experiments. | ||
| Line 103: | Line 103: | ||
|- | |- | ||
|| Press '''CTRL+ ALT''' and '''T''' keys. | || Press '''CTRL+ ALT''' and '''T''' keys. | ||
| − | || Press '''CTRL+ ALT''' and '''T''' keys to open the Terminal. | + | || Press '''CTRL+ ALT''' and '''T''' keys to open the '''Terminal'''. |
|- | |- | ||
| − | || Type '''python''', press | + | || Type '''python''', press '''Enter'''. |
Point to the default version of '''Python''' | Point to the default version of '''Python''' | ||
| − | ||To start '''Python interpreter''' type''' python''' and press | + | ||To start '''Python interpreter''' type''' python''' and press '''Enter'''. |
| − | Details regarding default version of '''Python''' will be displayed on the Terminal. | + | Details regarding default version of '''Python''' will be displayed on the '''Terminal'''. |
|- | |- | ||
| − | || Point to the angle brackets. | + | || Point to the '''angle brackets'''. |
| − | || The displayed three angle brackets indicate '''Python''' prompt(>>>). | + | || The displayed three '''angle brackets''' indicate '''Python''' prompt(>>>). |
| − | Now you are ready to type commands | + | Now you are ready to type '''commands'''. |
|- | |- | ||
||'''Slide Number 7''' | ||'''Slide Number 7''' | ||
| Line 124: | Line 124: | ||
'''www.spoken-tutorial.org'''. | '''www.spoken-tutorial.org'''. | ||
| − | || For more details about '''Python''' programming please visit our website. | + | || For more details about '''Python''' programming, please visit our website. |
|- | |- | ||
|| | || | ||
| − | || I will discuss about the channels on the top '''Panel''' of the device. | + | || I will discuss about the '''channels''' on the top '''Panel''' of the device. |
|- | |- | ||
|| Point to the top '''Panel''' | || Point to the top '''Panel''' | ||
| − | || On the top''' Panel''' each terminal is assigned to a specific channel number. | + | || On the top''' Panel''' each '''terminal''' is assigned to a specific '''channel''' number. |
|- | |- | ||
|| Point to '''A1''' | || Point to '''A1''' | ||
Point to '''A2''' | Point to '''A2''' | ||
| − | || For example | + | || For example '''channel 1''' is assigned to '''A1''' and '''channel 2''' to '''A2'''. |
|- | |- | ||
|| Point to the device. | || Point to the device. | ||
| − | ||I will show how to connect wires to the device | + | ||I will show how to connect wires to the device. |
|- | |- | ||
|| Point to the screw terminals. | || Point to the screw terminals. | ||
| − | || Device has screw terminals on either | + | || Device has '''screw terminals''' on either side. |
|- | |- | ||
|| Point to the screw terminals. | || Point to the screw terminals. | ||
| Line 148: | Line 148: | ||
Show the process. | Show the process. | ||
| − | + | ||To make the connection, we insert wires into the '''terminals''' and tighten the screws. | |
| − | + | ||
| − | ||To make the connection we insert wires into the terminals and tighten the screws. | + | |
Here '''A2 '''is connected to '''SINE.''' | Here '''A2 '''is connected to '''SINE.''' | ||
| − | + | |- | |
| − | This is the circuit diagram. | + | ||Point to the circuit diagram. |
| + | ||This is the circuit diagram. | ||
|- | |- | ||
|| '''Slide Number 8''' | || '''Slide Number 8''' | ||
| Line 171: | Line 170: | ||
Voltage of '''A2''' is displayed below. | Voltage of '''A2''' is displayed below. | ||
|- | |- | ||
| − | || Click on '''A2''', drag to | + | || Click on '''A2''', drag to '''channel CH1'''. |
| − | || Click on '''A2''' and drag to | + | || Click on '''A2''' and drag to '''channel CH1''' |
| − | + | ||
| + | When we drag '''A2''' to '''CH1,''' input data of '''A2 '''is assigned to '''CH1'''. | ||
|- | |- | ||
| Line 189: | Line 189: | ||
|| Click on '''CH1''' and drag to '''FIT'''. | || Click on '''CH1''' and drag to '''FIT'''. | ||
| − | The voltage and frequency of '''A2''' | + | The voltage and frequency of '''A2''' are displayed on the right. |
|- | |- | ||
|| | || | ||
| Line 212: | Line 212: | ||
||Type at the prompt: | ||Type at the prompt: | ||
| − | '''import expeyes.eyesj''' press | + | '''import expeyes.eyesj''' press '''Enter'''. |
| − | || To import “'''eyes'''” library from '''ExpEYES''', type at the prompt: | + | || To import “'''eyes'''” library from '''ExpEYES''', type at the '''prompt''': |
| − | '''import expeyes.eyesj''' press | + | '''import expeyes.eyesj''' press '''Enter'''. |
|- | |- | ||
|| Type at the prompt: | || Type at the prompt: | ||
| − | '''import expeyes.eyesj''' press | + | '''import expeyes.eyesj''' press '''Enter'''. |
Point to '''open()''' function | Point to '''open()''' function | ||
Point to the lines | Point to the lines | ||
| − | || Type '''p=expeyes.eyesj.open() ''' and press | + | || Type '''p=expeyes.eyesj.open() ''' and press '''Enter'''. |
| − | '''open() ''' | + | '''open() function''' returns an object if hardware is found. |
These lines will load the '''ExpEYES''' library and establish connection to the device. | These lines will load the '''ExpEYES''' library and establish connection to the device. | ||
| Line 236: | Line 236: | ||
|| To view the voltage of '''A2''', type | || To view the voltage of '''A2''', type | ||
| − | '''print p.get_voltage | + | '''print p.get_voltage within brackets 2 ''' and press '''Enter'''. |
Output shows voltage of '''A2''' | Output shows voltage of '''A2''' | ||
Similarly, we can show the various voltages of '''A2'''. | Similarly, we can show the various voltages of '''A2'''. | ||
| + | |||
Voltage of '''A2''' changes as it is an '''AC ''' voltage. | Voltage of '''A2''' changes as it is an '''AC ''' voltage. | ||
| Line 266: | Line 267: | ||
Download and install, | Download and install, | ||
| − | '''matplotlib v 1.4.3''' | + | *'''matplotlib v 1.4.3''' |
| − | '''numpy v 1.9 ''' or above. | + | *'''numpy v 1.9 ''' or above. |
Copy the installed '''ExpEYES''' files and drivers and paste in '''C drive'''. | Copy the installed '''ExpEYES''' files and drivers and paste in '''C drive'''. | ||
| Line 281: | Line 282: | ||
Copy the installed '''ExpEYES''' files and drivers and paste in '''C drive'''. | Copy the installed '''ExpEYES''' files and drivers and paste in '''C drive'''. | ||
|- | |- | ||
| − | || Type '''import expeyes.eyesj, '''press | + | || Type '''import expeyes.eyesj, '''press '''Enter'''. |
| − | Type''' p=expeyes.eyesj.open(),''' press | + | Type''' p=expeyes.eyesj.open(),''' press '''Enter'''. |
| − | || To generate '''Sine wave''', at the python prompt, | + | || To generate '''Sine wave''', at the '''python''' prompt, |
| − | Type '''import expeyes.eyesj''' and press | + | Type '''import expeyes.eyesj''' and press '''Enter'''. |
| − | Type''' p=expeyes.eyesj.open() ''' and press | + | Type''' p=expeyes.eyesj.open() ''' and press '''Enter''' as before. |
|- | |- | ||
| − | || Type '''from pylab import '''<nowiki>*</nowiki>(asterisk), press | + | || Type '''from pylab import '''<nowiki>*</nowiki>(asterisk), press '''Enter'''. |
Point to '''from pylab import *''' | Point to '''from pylab import *''' | ||
|| Type '''from pylab import '''<nowiki>*</nowiki>(asterisk). | || Type '''from pylab import '''<nowiki>*</nowiki>(asterisk). | ||
| − | ''' | + | '''pylab''' is a program from '''matplotlib library'''. |
| − | Press | + | Press '''Enter'''. |
|- | |- | ||
| − | || Type ''' ion()''', press | + | || Type ''' ion()''', press '''Enter'''. |
Point to '''ion()''' | Point to '''ion()''' | ||
|| Type''' ion() ''' | || Type''' ion() ''' | ||
| − | This command sets '''pylab | + | This command sets '''pylab interactive mode.''' |
| − | + | Press '''Enter'''. | |
|- | |- | ||
| − | || Type ''' t,v=p.capture(2,200,100),''' press | + | || Type ''' t,v=p.capture(2,200,100),''' press '''Enter'''. |
Point to “'''t,v''' | Point to “'''t,v''' | ||
| Line 318: | Line 319: | ||
Point to “100” | Point to “100” | ||
| − | || Type''' t,v=p.capture | + | || Type''' t,v=p.capture within brackets 2,200,100'''. |
| − | “'''t,v''' are time and voltage vectors. | + | “'''t,v''' are '''time''' and '''voltage vectors'''. |
| − | “2” is channel number for '''A2''', | + | “2” is '''channel''' number for '''A2''', |
“200” is the number of data points, | “200” is the number of data points, | ||
| − | “100” is a time interval between subsequent measurements. | + | “100” is a '''time interval''' between subsequent measurements. |
| − | Press | + | Press '''Enter''' |
|- | |- | ||
| − | || type '''plot(t,v),''' press | + | || type '''plot(t,v),''' press '''Enter'''. |
| − | Point to Sine wave | + | Point to Sine wave. |
| − | || To view the output, type '''plot | + | || To view the output, type '''plot within brackets t,v''' |
| − | '''plot | + | '''plot within brackets t,v''' generates a '''Sine wave''' on a new window. |
| − | Press | + | Press '''Enter'''. |
|- | |- | ||
|| Show the screen. | || Show the screen. | ||
| − | || We can generate a '''Sine wave''', using the above commands on '''Windows command prompt''' as well. | + | || We can generate a '''Sine wave''', using the above commands on '''Windows command prompt,''' as well. |
|- | |- | ||
||'''Slide Number 12''' | ||'''Slide Number 12''' | ||
| Line 347: | Line 348: | ||
Measure voltage of '''A1''' using a battery as an external voltage source. | Measure voltage of '''A1''' using a battery as an external voltage source. | ||
| − | || Next let's measure voltage of '''A1''' using a battery as an external voltage source. | + | || Next, let's measure voltage of '''A1''' using a battery as an external voltage source. |
|- | |- | ||
|| Show the circuit diagram | || Show the circuit diagram | ||
|| To measure external voltage source, '''Ground(GND)''' is connected to '''A1''' through a battery of '''3V'''. | || To measure external voltage source, '''Ground(GND)''' is connected to '''A1''' through a battery of '''3V'''. | ||
| − | This is the circuit diagram. | + | |- |
| + | ||Circuit diagram image | ||
| + | ||This is the circuit diagram. | ||
We will show the value of '''A1''' using '''Python interpreter.''' | We will show the value of '''A1''' using '''Python interpreter.''' | ||
|- | |- | ||
| − | ||At the python prompt: | + | ||At the '''python''' prompt: |
| − | Type '''import expeyes.eyesj''', press | + | Type '''import expeyes.eyesj''', press '''Enter'''. |
| − | Type '''p=expeyes.eyesj.open()''', press | + | Type '''p=expeyes.eyesj.open()''', press '''Enter'''. |
| − | ||At the python prompt: | + | ||At the '''python prompt''': |
| − | Type '''import expeyes.eyesj,''' and press | + | Type '''import expeyes.eyesj,''' and press '''Enter'''. |
| − | Type''' p=expeyes.eyesj.open(), '''press | + | Type''' p=expeyes.eyesj.open(), ''' and press '''Enter'''. |
|- | |- | ||
| − | ||Type '''print p.get_voltage(1),''' and press | + | ||Type '''print p.get_voltage(1),''' and press '''Enter'''. |
Point to channel1. | Point to channel1. | ||
Point to voltage of '''A1.''' | Point to voltage of '''A1.''' | ||
| − | || Type '''print p.get_voltage | + | || Type '''print p.get_voltage within brackets 1''' and press |
| − | + | '''Enter'''. | |
Here '''Channel 1''' is assigned to '''A1'''. | Here '''Channel 1''' is assigned to '''A1'''. | ||
| − | Voltage of '''A1''' is displayed on the terminal. | + | Voltage of '''A1''' is displayed on the '''terminal'''. |
|- | |- | ||
|| '''Slide Number 13''' | || '''Slide Number 13''' | ||
| Line 390: | Line 393: | ||
|| In this experiment ''' PVS''' is connected to '''A1'''. | || In this experiment ''' PVS''' is connected to '''A1'''. | ||
| − | This is the circuit diagram. | + | |
| + | |- | ||
| + | ||Show circuit diagram | ||
| + | ||This is the circuit diagram. | ||
|- | |- | ||
| − | || Type '''print p.set_voltage(3)''', press | + | || Type '''print p.set_voltage(3)''', press '''Enter'''. |
Point to value of ''' PVS'''. | Point to value of ''' PVS'''. | ||
Point to voltage. | Point to voltage. | ||
| − | || Back to the terminal. | + | || Back to the '''terminal'''. |
| − | Type '''print p.set_voltage | + | Type '''print p.set_voltage within brackets 3 ''' and press '''Enter'''. |
Here voltage of '''PVS''' will be set to 3 volts. | Here voltage of '''PVS''' will be set to 3 volts. | ||
| Line 406: | Line 412: | ||
|- | |- | ||
| − | || Type '''print p.get_voltage(1),''' press | + | || Type '''print p.get_voltage(1),''' press '''Enter'''. |
Point to voltage. | Point to voltage. | ||
| − | || Type '''print p.get_voltage | + | || Type '''print p.get_voltage within brackets 1 ''' and press '''Enter'''. |
| − | Voltage of '''A1''' is displayed on the terminal. | + | Voltage of '''A1''' is displayed on the '''terminal'''. |
|- | |- | ||
|| '''Slide Number 14''' | || '''Slide Number 14''' | ||
| Line 423: | Line 429: | ||
Show the circuit diagram. | Show the circuit diagram. | ||
| − | || In this experiment '''A1''' is connected to '''SQR1'''. | + | || In this experiment |
| + | *'''A1''' is connected to '''SQR1'''. | ||
| − | '''SQR1''' is connected to '''A2''' through a '''capacitor'''. | + | *'''SQR1''' is connected to '''A2''' through a '''capacitor'''. |
| − | '''A2 '''is connected to '''ground(GND)''' through 200k '''resistor'''. | + | *'''A2 '''is connected to '''ground(GND)''' through 200k '''resistor'''. |
| − | This is the circuit diagram. | + | |
| + | |- | ||
| + | ||Show the circuit diagram. | ||
| + | ||This is the circuit diagram. | ||
|- | |- | ||
| Line 482: | Line 492: | ||
|| Click on '''CH2''' and drag to '''FIT'''. | || Click on '''CH2''' and drag to '''FIT'''. | ||
| − | Voltage and frequency of '''A2 '''is displayed on the | + | Voltage and frequency of '''A2 '''is displayed on the right side. |
|- | |- | ||
|| '''Slide Number 15''' | || '''Slide Number 15''' | ||
| − | Measure '''Capacitance, Resistance '''and generate a Square wave''' using '''Python interpreter.''' | + | Measure '''Capacitance, Resistance '''and generate a '''Square wave''' using '''Python interpreter.''' |
| − | || We will perform the same experiment to: Measure '''Capacitance, Resistance '''and generate a | + | || We will perform the same experiment to: |
| + | *Measure '''Capacitance, Resistance ''' | ||
| + | *and generate a '''Square wave''' using '''Python interpreter.''' | ||
|- | |- | ||
|| At the python prompt: | || At the python prompt: | ||
| − | Type '''import expeyes.eyesj''', press | + | Type '''import expeyes.eyesj''', press '''Enter'''. |
| − | Type '''p=expeyes.eyesj.open()''', press | + | Type '''p=expeyes.eyesj.open()''', press '''Enter'''. |
| − | || At the python prompt: | + | || At the '''python prompt''': |
| − | Type '''import expeyes.eyesj''' and press | + | Type '''import expeyes.eyesj''' and press '''Enter'''. |
| − | Type''' p=expeyes.eyesj.open() ''' and press | + | Type''' p=expeyes.eyesj.open() ''' and press '''Enter'''. |
|- | |- | ||
| − | || Type '''p.measure_cap()''', press | + | || Type '''p.measure_cap()''', press '''Enter'''. |
Point to displayed capacitance value | Point to displayed capacitance value | ||
|| To display the '''Capacitance ''' value: | || To display the '''Capacitance ''' value: | ||
| − | Type '''p.measure_cap( )''' and press | + | Type '''p.measure_cap( )''' and press '''Enter'''. |
| − | '''Capacitance''' value is displayed on the terminal. | + | '''Capacitance''' value is displayed on the '''terminal'''. |
|- | |- | ||
| − | || Type '''p.measure_res(),''' press | + | || Type '''p.measure_res(),''' press '''Enter'''. |
|| To display the '''Resistance '''value: | || To display the '''Resistance '''value: | ||
| − | Type '''p.measure_res() ''' and press | + | Type '''p.measure_res() ''' and press '''Enter'''. |
| − | '''Resistance''' value is displayed on the terminal. | + | '''Resistance''' value is displayed on the '''terminal'''. |
|- | |- | ||
| − | || Type '''from pylab import *, '''press | + | || Type '''from pylab import *, '''press '''Enter'''. |
| − | Type''' ion() '''and press | + | Type''' ion() '''and press '''Enter'''. |
|| To generate a Square wave: | || To generate a Square wave: | ||
| − | Type '''from pylab import *'''(asterisk) and press | + | Type '''from pylab import *'''(asterisk) and press '''Enter'''. |
| − | Type ''' ion()''' and press | + | Type ''' ion()''' and press '''Enter'''. |
|- | |- | ||
| − | || Type '''print p.set_sqr1(100),''' and press | + | || Type '''print p.set_sqr1(100),''' and press '''Enter''' |
| − | Type''' t,v=p.capture(6,400,100)''' and press | + | Type''' t,v=p.capture(6,400,100)''' and press '''Enter''' |
| − | || Type '''print p.set_sqr1 | + | || Type '''print p.set_sqr1 within brackets 100 '''and press '''Enter'''. |
| − | Here 100 is the frequency of the square wave. | + | Here 100 is the '''frequency''' of the '''square wave'''. |
| − | Type''' t,v=p.capture | + | Type''' t,v=p.capture within brackets 6,400,100''' and press '''Enter'''. |
|- | |- | ||
| − | || Type '''plot(t,v)''' and press | + | || Type '''plot(t,v)''' and press '''Enter'''. |
Point to generated square wave. | Point to generated square wave. | ||
| − | || Type''' plot | + | || Type''' plot within brackets t,v'''. |
| − | '''plot | + | '''plot within brackets t,v '''generates a '''square wave''' on a new window. |
| − | Press | + | Press '''Enter'''. |
|- | |- | ||
| Line 560: | Line 572: | ||
We have learnt: | We have learnt: | ||
| − | * Introduction to Python | + | * Introduction to '''Python''' |
| − | + | * Measure AC voltage using Plot window & '''Python''' | |
| − | * Measure AC voltage using Plot window & Python | + | * Generate a '''Sine wave''' |
| − | + | * Measure external and internal voltages using '''Python''' | |
| − | * Generate a Sine wave | + | * Measure '''capacitance''' & '''resistance''' using Plot window & '''Python''' |
| − | + | * Generate a '''Square wave''' | |
| − | * Measure external and internal voltages using Python | + | |
| − | + | ||
| − | * Measure capacitance & resistance using Plot window & Python | + | |
| − | + | ||
| − | * Generate a Square wave | + | |
| − | + | ||
* Show connections & circuit diagrams for our experiments | * Show connections & circuit diagrams for our experiments | ||
| Line 577: | Line 583: | ||
* Introduction to Python | * Introduction to Python | ||
| − | * Measure AC voltage using Plot window and Python | + | * Measure AC voltage using Plot window and '''Python''' |
| − | * Generate a Sine wave | + | * Generate a '''Sine wave''' |
| − | * Measure external and internal voltages | + | * Measure external and internal voltages using '''Python''' |
| − | Python | + | |
| − | * Measure capacitance and resistance using Plot window and Python | + | * Measure capacitance and resistance using Plot window and '''Python''' |
| − | * Generate a Square wave | + | * Generate a '''Square wave''' |
* Show connections and circuit diagrams for our experiments | * Show connections and circuit diagrams for our experiments | ||
| Line 596: | Line 601: | ||
Measure the resistance of your finger using Plot window. | Measure the resistance of your finger using Plot window. | ||
| − | Using python generate a combination of Sine and Square waves. | + | Using '''python''', generate a combination of '''Sine''' and '''Square waves'''. |
Show circuit diagrams for the above experiment. | Show circuit diagrams for the above experiment. | ||
|| As an assignment, | || As an assignment, | ||
| − | Measure the resistance of your finger using Plot window. | + | Measure the '''resistance''' of your finger using Plot window. |
| − | Using python generate a combination of Sine and Square waves. | + | Using '''python''', generate a combination of '''Sine''' and '''Square waves.''' |
Show circuit diagrams for the above experiment. | Show circuit diagrams for the above experiment. | ||
Latest revision as of 18:35, 30 January 2017
| Visual Cue | Narration |
| Slide Number 1
Title Slide |
Hello everyone.
Welcome to this tutorial on Communicating to ExpEYES using Python. |
| Slide Number 2+3
Learning Objectives We will learn about,
|
In this tutorial we will learn:
|
| Slide Number 4
System Requirement
|
Here I am using,
|
| Slide Number 5
Pre-requisties You should be familiar with: ExpEYES junior interface. For relevant tutorials, visit our website. www.spoken-tutorial.org. |
To follow this tutorial, you should be familiar with:
ExpEYES Junior interface. Basic Python programming. If not, for relevant tutorials, please visit our website. |
| Let's begin with introduction to Python. | |
| Slide Number 6
Introduction to Python
|
|
| Let's make sure that Python is installed on our system. | |
| Press CTRL+ ALT and T keys. | Press CTRL+ ALT and T keys to open the Terminal. |
| Type python, press Enter.
Point to the default version of Python |
To start Python interpreter type python and press Enter.
Details regarding default version of Python will be displayed on the Terminal. |
| Point to the angle brackets. | The displayed three angle brackets indicate Python prompt(>>>).
Now you are ready to type commands. |
| Slide Number 7
Details About Python For more details about Python programming www.spoken-tutorial.org. |
For more details about Python programming, please visit our website. |
| I will discuss about the channels on the top Panel of the device. | |
| Point to the top Panel | On the top Panel each terminal is assigned to a specific channel number. |
| Point to A1
Point to A2 |
For example channel 1 is assigned to A1 and channel 2 to A2. |
| Point to the device. | I will show how to connect wires to the device. |
| Point to the screw terminals. | Device has screw terminals on either side. |
| Point to the screw terminals.
|
To make the connection, we insert wires into the terminals and tighten the screws.
Here A2 is connected to SINE. |
| Point to the circuit diagram. | This is the circuit diagram. |
| Slide Number 8
To measure voltage of A2 and show its Sine wave' |
Let's perform an experiment to measure the voltage of A2 and show its Sine wave. |
| Let's see the result on the Plot window. | |
| Point to A2.
Point to voltage. |
On the Plot window, click on A2 to display the voltage of A2.
Voltage of A2 is displayed below. |
| Click on A2, drag to channel CH1. | Click on A2 and drag to channel CH1
|
| Move msec/div slider to show the Sine wave.
Click on A2, show changing voltage of A2. |
Move the msec/div slider to show the Sine wave.
Click on A2 to show change in voltages of A2. |
| Click on CH1, drag to FIT.
Point to voltage. |
Click on CH1 and drag to FIT.
The voltage and frequency of A2 are displayed on the right. |
| We will perform the same experiment and measure voltage of A2 using Python. | |
| Slide Number 9
Note To avoid errors on the Python interpretor:
|
Please note to avoid errors on Python interpreter:
|
| Type at the prompt:
import expeyes.eyesj press Enter. |
To import “eyes” library from ExpEYES, type at the prompt:
import expeyes.eyesj press Enter. |
| Type at the prompt:
import expeyes.eyesj press Enter. Point to open() function Point to the lines |
Type p=expeyes.eyesj.open() and press Enter.
open() function returns an object if hardware is found. These lines will load the ExpEYES library and establish connection to the device. |
| Type print p.get_voltage(2).
Point to voltage. Point to voltages. |
To view the voltage of A2, type
print p.get_voltage within brackets 2 and press Enter. Output shows voltage of A2 Similarly, we can show the various voltages of A2.
|
| Slide Number 10
Install To generate plots using Python interpreter: Install python-matplotlib library using Synaptic Package Manager. |
To generate plots using Python interpreter:
Install python-matplotlib library using Synaptic Package Manager. I have already installed python-matplotlib library on my system. |
| Slide Number 11
Install To generate plots on Windows OS: Download and install,
Copy the installed ExpEYES files and drivers and paste in C drive. |
To generate plots on Windows Operating system:
Download and install,
Copy the installed ExpEYES files and drivers and paste in C drive. |
| Type import expeyes.eyesj, press Enter.
Type p=expeyes.eyesj.open(), press Enter. |
To generate Sine wave, at the python prompt,
Type import expeyes.eyesj and press Enter. Type p=expeyes.eyesj.open() and press Enter as before. |
| Type from pylab import *(asterisk), press Enter.
Point to from pylab import * |
Type from pylab import *(asterisk).
pylab is a program from matplotlib library. Press Enter. |
| Type ion(), press Enter.
Point to ion() |
Type ion()
This command sets pylab interactive mode. Press Enter. |
| Type t,v=p.capture(2,200,100), press Enter.
Point to “t,v Point to “2”, Point to “200” Point to “100” |
Type t,v=p.capture within brackets 2,200,100.
“t,v are time and voltage vectors. “2” is channel number for A2, “200” is the number of data points, “100” is a time interval between subsequent measurements. Press Enter |
| type plot(t,v), press Enter.
Point to Sine wave. |
To view the output, type plot within brackets t,v
plot within brackets t,v generates a Sine wave on a new window. Press Enter. |
| Show the screen. | We can generate a Sine wave, using the above commands on Windows command prompt, as well. |
| Slide Number 12
External Voltage Measure voltage of A1 using a battery as an external voltage source. |
Next, let's measure voltage of A1 using a battery as an external voltage source. |
| Show the circuit diagram | To measure external voltage source, Ground(GND) is connected to A1 through a battery of 3V. |
| Circuit diagram image | This is the circuit diagram.
We will show the value of A1 using Python interpreter. |
| At the python prompt:
Type import expeyes.eyesj, press Enter. Type p=expeyes.eyesj.open(), press Enter. |
At the python prompt:
Type import expeyes.eyesj, and press Enter. Type p=expeyes.eyesj.open(), and press Enter. |
| Type print p.get_voltage(1), and press Enter.
Point to channel1. Point to voltage of A1. |
Type print p.get_voltage within brackets 1 and press
Enter. Here Channel 1 is assigned to A1. Voltage of A1 is displayed on the terminal. |
| Slide Number 13
Internal Voltage Measure voltage of A1 using PVS as internal voltage source. |
let's measure voltage of A1 using PVS as internal voltage source. |
| Show the circuit diagram. | In this experiment PVS is connected to A1.
|
| Show circuit diagram | This is the circuit diagram. |
| Type print p.set_voltage(3), press Enter.
Point to value of PVS. Point to voltage. |
Back to the terminal.
Type print p.set_voltage within brackets 3 and press Enter. Here voltage of PVS will be set to 3 volts. Voltage of PVS is displayed. |
| Type print p.get_voltage(1), press Enter.
Point to voltage. |
Type print p.get_voltage within brackets 1 and press Enter.
Voltage of A1 is displayed on the terminal. |
| Slide Number 14
AC and DC components of a voltage using a capacitor & resistor and generate a square wave. |
Now I will demonstrate AC and DC components of a voltage using capacitor and resistor.
And also 'generate a square wave. |
| Show the picture.
Show the circuit diagram. |
In this experiment
|
| Show the circuit diagram. | This is the circuit diagram. |
| Let's see the result on the Plot window | |
| Point to the Plot window.
Click on Measure C on IN1 button. Point to Capacitance. |
On the Plot window click on Measure C on IN1 button.
Capacitance of IN1 is displayed as -0.6pF(pico farads). |
| Click on Measure R on SEN button.
Point to the Resistance value of SEN. |
Click on Measure R on SEN button.
Resistance of SEN is displayed as 560Ω(ohms)
|
| Click on SQ1, drag to CH1.
Point to assigned value. |
Click on SQ1 and drag to CH1.
SQ1 is assigned to channel CH1. |
| Click on A2, drag to CH2.
Point to assigned value. |
Click on A2 and drag to CH2.
A2 is assigned to channel CH2. |
| Click on SQR1 check box.
Move the msec/div slider. |
Click on SQR1 check box to show the Square waves.
Move the msec/div slider to adjust the waves. |
| Click on CH2, drag to FIT.
|
Click on CH2 and drag to FIT.
Voltage and frequency of A2 is displayed on the right side. |
| Slide Number 15
Measure Capacitance, Resistance and generate a Square wave using Python interpreter. |
We will perform the same experiment to:
|
| At the python prompt:
Type import expeyes.eyesj, press Enter. Type p=expeyes.eyesj.open(), press Enter. |
At the python prompt:
Type import expeyes.eyesj and press Enter. Type p=expeyes.eyesj.open() and press Enter. |
| Type p.measure_cap(), press Enter.
Point to displayed capacitance value |
To display the Capacitance value:
Type p.measure_cap( ) and press Enter. Capacitance value is displayed on the terminal. |
| Type p.measure_res(), press Enter. | To display the Resistance value:
Type p.measure_res() and press Enter. Resistance value is displayed on the terminal. |
| Type from pylab import *, press Enter.
|
To generate a Square wave:
Type from pylab import *(asterisk) and press Enter.
|
| Type print p.set_sqr1(100), and press Enter
|
Type print p.set_sqr1 within brackets 100 and press Enter.
Here 100 is the frequency of the square wave. Type t,v=p.capture within brackets 6,400,100 and press Enter. |
| Type plot(t,v) and press Enter.
Point to generated square wave. |
Type plot within brackets t,v.
plot within brackets t,v generates a square wave on a new window. Press Enter. |
| Let's summarize. | |
| Slide Number 16
Summary We have learnt:
|
|
| Slide Number 17
As an assignment, Measure the resistance of your finger using Plot window. Using python, generate a combination of Sine and Square waves. Show circuit diagrams for the above experiment. |
As an assignment,
Measure the resistance of your finger using Plot window. Using python, generate a combination of Sine and Square waves. Show circuit diagrams for the above experiment. |
| Slide Number 18
Acknowledgement Watch the video available at /What is a Spoken Tutorial It summarises the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it. |
|
| Slide Number 19
The Spoken Tutorial Project Team Conducts workshops using spoken tutorials Gives certificates to those who pass an online test For more details, please write to contact@spoken-tutorial.org |
* We conduct workshops using SpokenTutorials and give certificates.
|
| Slide number 20
Spoken Tutorial Project is a part of the Talk to a Teacher project It is supported by the National Mission on Education through ICT, MHRD, Government of India More information on this Mission is available at /NMEICT-Intro |
The Spoken Tutorial Project is funded by NMEICT, MHRD Government of India. |
| This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi..
Thank you for joining. |
