View source for KiCad/C2/Designing-circuit-schematic-in-KiCad/English-timed

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|'''Time'''

|'''Narration'''


|-
| 00.01
| Welcome to the spoken tutorial on “Designing circuit schematic in Kicad” 

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| 00.08
|  Let us now see the steps involved in PCB designing

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| 00.12
| First step is to create schematic for the desired circuit. 

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| 00.16
|Second step is to generate netlist.

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| 00.19
| Third step is to map components with corresponding footprints.

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| 00.22
|And fourth step is to create board layout for the circuit. 

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| 00.27
|In this tutorial we will learn first step, that is, 

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| 00.32
|Creating a schematic for the desired circuit. 


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|00.35
| We are using Ubuntu 12.04 as the operating system. 

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|00.40
| With KiCad version 2011 hyphen 05 hyphen 25 for this tutorial. 

 
 

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| 00.49
|Basic knowledge of electronic circuits is a pre-requisite for this tutorial. 

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| 00.56
|We will use Astable multivibrator as an example circuit for this tutorial. 

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| 01.04
|To start KiCad, 

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| 01.05
|Go to top left corner of ubuntu desktop screen. 

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| 01.08
|Click on first icon i.e the Dash home. 

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|01.12
| In the search bar type 'KiCad', and press Enter. 

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| 01.19
|KiCad main window will appear on the screen. 

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| 01.22
|  Note that in Ubuntu 12.04, the menu bar of KiCad appears on the top panel of Ubuntu desktop. 

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| 01.30
|To start a new project, click on File and then click on New.

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| 01.35
|Give a name to your project. For example, project1.

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| 01.42
| Note that project is getting saved with .pro extension 

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|01.47
|  Let me resize this window for better view 


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| 01.52
| Notice where your project is getting saved and change the directory if needed. 

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| 01.58
| Click on Save.

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| 02.01
| Circuit schematics are made in KiCad using EESchema. 

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| 02.06
|Let me show you how to start EESchema in KiCad.

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|02.10
| The first tab in the top panel of KiCad main window is called as EESchema or schematic editor

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| 02.19
|Clicking on EESchema tab opens the schematic editor.

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| 02.23
|An Info dialog box will appear saying it cannot find the schematic.

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| 02.28
|Click on Ok.

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| 02.32
|We will create circuit schematics here. 

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| 02.35
| Go to right panel of EESchema window. 

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|02.38
|click on Place a component button. 

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| 02.42
| Now click on the blank EESchema window. 

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| 02.46
| The component selection window will open up. 

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| 02.49
| Now we will place 555 timer IC schematic in the EESchema window. 

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| 02.56
|In the Name field of component selection window, type 555 and click on Ok.

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| 03.05
|It will show the search result as LM555N.

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| 03.11
|Select this result and click on OK. 

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| 03.14
|The component’s schematic will appear on the EESchema window.  

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| 03.19
|It would be tied to your cursor. 

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| 03.22
| Place the component at the center of the screen by a single click. 

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| 03.27
| To zoom in and out for better view use the scroll button of your mouse. 

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| 03.35
| Keep Cursor on Component which you want to zoom in and zoom out.

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| 03.39
|You can also use F1 and F2 keys to zoom in and zoom out, respectively. 

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| 03.46
| You may or may not see the VCC and GND i.e. the ground terminal on the 555 IC.

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| 03.56
| If you do not see it, go to the left panel of EESchema window. 

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| 04.00
|  Click on the Show hidden pins button. 




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| 04.04
|Now we will place a resistor in the EESchema window. 

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| 04.09
|The Place a component option was previously selected by us. 

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| 04.13
|Hence, simply click on EESchema and you will see the component selection window. 

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| 04.21
|In the name field, type r and click on OK. 

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| 04.26
| Resistor schematic will appear on EESchema which will be tied to cursor. 

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| 04.32
|Place the resistor somewhere on the EESchema by a single click  

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| 04.37
|We need two more resistors.

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| 04.39
|We can get the two resistors using the Place a component button. 
 
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| 04.42
|But since we already have a resistor, let us see how to copy a component.  

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| 04.48
| To copy a component, right click on the component and choose Copy Component.

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| 05.01
|A copy of the component will be tied to your cursor. 

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| 05.05
|Place this resistor somewhere on EESchema by a single click. 

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| 05.11
|This can also be done more quickly using the keyboard shortcut c. 


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| 05.16
|For this, keep the cursor on the component and then press c. 

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| 05.22
| Again it will be tied to your cursor. 

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| 05.27
|Click once to place it. 

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| 05.30
|  A list of shortcuts can be obtained by pressing Shift and ? (question mark) key. 

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| 05.36
|Here is the list of keyboard shortcuts. 

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| 05.40
|Close this window.  

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| 05.43
|Click on EESchema window to open the component selection window. 

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| 05.49
|Next we need two capacitors, electrolytic and ceramic.

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| 05.53
| Type cp1 to add electrolytic capacitor and click OK.

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| 06.00
|Type c to add ceramic capacitor and click OK. 

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| 06.06
|We also need a Light Emitting Diode, know as LED.

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|06.10
|In component selection window type led and click on OK.

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|06.17
| Now we need a power supply i.e.Vcc and Ground terminals.  


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| 06.22
| On the right panel of EESchema, click on Place a power port button. 

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| 06.29
|Click once on the EESchema to open the component selection window. 

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| 06.34
|Click on List All button and you will see a list of various power notations. 

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| 06.40
|Choose +5V (plus 5 volt) and click on OK.

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| 06.48
| Place the component by single click on the EESchema window 

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| 06.52
|Similarly, to get the ground terminal, 

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| 06.54
|choose ground from the list and click on OK  

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| 07.01
|Let me choose the ground terminal 

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| 07.08
| We also need a connector to connect the external power supply 

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| 07.14
|Click on the EESchema to open the component selection window.

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| 07.19
| Click on List All button and you will see a list.

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| 07.24
|Choose conn option and click on OK. 

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| 07.31
|Scroll down and choose CONN_2 from the list and click on OK. 


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| 07.41
| A two terminal connector will appear. It will be tied to your mouse pointer 

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| 07.48
|Click once to place it. 

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|07.56
|Now we will arrange the components, by moving them to appropriate places. 

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| 08.01
|We will use the  shortcut key m for moving the components. 

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| 08.04
|To move a component, keep the mouse pointer on a component, say resistor, and then press m. 

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|08.15
| We will place this resistor to the right of IC 555 by a single click on the EESchema. 

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| 08.28
| We will use the keyboard shortcut key r for rotating the LED and aligning it vertically. 

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|08.40
| Now we will see how to interconnect or wire the components as per the circuit diagram. 

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| 08.45
| Let us start with the interconnection of components. 

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| 08.48
| On right panel of EESchema, Click on Place a wire button. 

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| 08.56
|We will now interconnect two resistors. 

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|08.58
| We will connect wire by clicking on either nodes of both the resistors.
 
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| 09.11
|Now we will connect the 7th pin of IC 555 to the wire connecting the two resistor.  

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| 09.18
|Click on the 7th pin of IC 555 and then on the wire connecting the two resistors.

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| 09.30
| Notice that this will automatically form a junction which appears as a node. 

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| 09.35
|I have already interconnected the components and saved it.

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| 09.39
| I will now open and use this already made schematic to save time. 

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| 09.44
|I will go to file menu & click on open.

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| 09.53
|A Confirmation window opens. Click on Yes. 

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| 10.04
|I will choose project1.sch from the desired directory.

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| 10.18
|Let me resize this window first . 

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| 10.22
|and then I will click on open.

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| 10.29
|I will click on open.

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| 10.33
|Here is the schematic created earlier. 

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| 10.36
|We would now see how to annotate components. 

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| 10.39
|Annotation gives unique identification to each component. 

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| 10.43
|Annotating will replace the question marks on the components with unique numbers. 


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| 10.50
|On top panel of EESchema, Click on “Annotate schematic” button. 

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| 10.58
|This will open the Annotate Schematic window. 

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|11.02
|In this window, keep the default configuration. 

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|11.05
| Click on the Annotation Button. 

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|11.09
|This will warn you that it will annotate only the un-annotate components. 

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|11.13
|Click on OK.

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| 11.15
|Click on the Close button on the Annotate schematic window. 

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|11.20
|Notice that the question marks on the components are replaced with unique numbers. 

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|11.30
|Click on File 

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| 11.37
| and choose Save whole schematic project to save this schematic. 

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| 11.43
|Click on File and choose Quit. 

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| 11.48
| This will close the EESchema window. 

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|11.50
|Now go to KiCad main window. 


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|11.53
|Click on File and choose Quit 

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| 11.56
| This completes the objective of this tutorial of creating circuit schematic in KiCad.  

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| 12.01
| Let us summarize what we learnt in this tutorial

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| 12.05
|In this tutorial we learnt, 
 
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| 12.07
|To use EESchema in KiCad for creating circuit schematic 


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| 12.11
| Annotation of circuit schematic. 

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| 12.15
|  Try the following Assignment, 

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| 12.17
|Place component Inductor on EESchema using component selection window. 

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|12.24
|Explore shortcut keys a, x and y

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| 12.31
|Watch the video available at the following link 

|-
| 12.35
|It summarises the Spoken Tutorial project 

|-
| 12.37
| If you do not have good bandwidth, you can download and watch it 

|-
| 12.43
| The Spoken Tutorial Project Team 

|-
| 12.45
|Conducts workshops using spoken tutorials 

|-
| 12.48
|Gives certificates for those who pass an online test 

|-
| 12.52
|For more details, please write to contact at spoken hyphen tutorial dot org 

|-
| 12.59
|Spoken Tutorial Project is a part of the Talk to a Teacher project 

|-
| 13.03
|It is supported by the National Mission on Education through ICT, MHRD, Government of India 

|-
| 13.09
|More information on this Mission is available at 

|-
| 13.13
|spoken hyphen tutorial dot org slash NMEICT hyphen Intro 

|-
| 13.20
|This script has been contributed by Abhishek & Rupak 
|-
| 13.25
|This is Rupak Rokade from IIT Bombay, signing off. Thanks for joining.