Difference between revisions of "KiCad/C2/Designing-circuit-schematic-in-KiCad/English-timed"
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Revision as of 15:25, 25 November 2013
| Time | Narration
|
| 00.01 | Welcome to the spoken tutorial on “Designing circuit schematic in Kicad” |
| 00.08 | Let us now see the steps involved in PCB designing |
| 00.12 | First step is to create schematic for the desired circuit. |
| 00.16 | Second step is to generate netlist. |
| 00.19 | Third step is to map components with corresponding footprints. |
| 00.22 | And fourth step is to create board layout for the circuit. |
| 00.27 | In this tutorial we will learn first step, that is, |
| 00.32 | Creating a schematic for the desired circuit.
|
| 00.35 | We are using Ubuntu 12.04 as the operating system. |
| 00.40 | With KiCad version 2011 hyphen 05 hyphen 25 for this tutorial.
|
| 00.49 | Basic knowledge of electronic circuits is a pre-requisite for this tutorial. |
| 00.56 | We will use Astable multivibrator as an example circuit for this tutorial. |
| 01.04 | To start KiCad, |
| 01.05 | Go to top left corner of ubuntu desktop screen. |
| 01.08 | Click on first icon i.e the Dash home. |
| 01.12 | In the search bar type 'KiCad', and press Enter. |
| 01.19 | KiCad main window will appear on the screen. |
| 01.22 | Note that in Ubuntu 12.04, the menu bar of KiCad appears on the top panel of Ubuntu desktop. |
| 01.30 | To start a new project, click on File and then click on New. |
| 01.35 | Give a name to your project. For example, project1. |
| 01.42 | Note that project is getting saved with .pro extension |
| 01.47 | Let me resize this window for better view
|
| 01.52 | Notice where your project is getting saved and change the directory if needed. |
| 01.58 | Click on Save. |
| 02.01 | Circuit schematics are made in KiCad using EESchema. |
| 02.06 | Let me show you how to start EESchema in KiCad. |
| 02.10 | The first tab in the top panel of KiCad main window is called as EESchema or schematic editor |
| 02.19 | Clicking on EESchema tab opens the schematic editor. |
| 02.23 | An Info dialog box will appear saying it cannot find the schematic. |
| 02.28 | Click on Ok. |
| 02.32 | We will create circuit schematics here. |
| 02.35 | Go to right panel of EESchema window. |
| 02.38 | click on Place a component button. |
| 02.42 | Now click on the blank EESchema window. |
| 02.46 | The component selection window will open up. |
| 02.49 | Now we will place 555 timer IC schematic in the EESchema window. |
| 02.56 | In the Name field of component selection window, type 555 and click on Ok. |
| 03.05 | It will show the search result as LM555N. |
| 03.11 | Select this result and click on OK. |
| 03.14 | The component’s schematic will appear on the EESchema window. |
| 03.19 | It would be tied to your cursor. |
| 03.22 | Place the component at the center of the screen by a single click. |
| 03.27 | To zoom in and out for better view use the scroll button of your mouse. |
| 03.35 | Keep Cursor on Component which you want to zoom in and zoom out. |
| 03.39 | You can also use F1 and F2 keys to zoom in and zoom out, respectively. |
| 03.46 | You may or may not see the VCC and GND i.e. the ground terminal on the 555 IC. |
| 03.56 | If you do not see it, go to the left panel of EESchema window. |
| 04.00 | Click on the Show hidden pins button.
|
| 04.04 | Now we will place a resistor in the EESchema window. |
| 04.09 | The Place a component option was previously selected by us. |
| 04.13 | Hence, simply click on EESchema and you will see the component selection window. |
| 04.21 | In the name field, type r and click on OK. |
| 04.26 | Resistor schematic will appear on EESchema which will be tied to cursor. |
| 04.32 | Place the resistor somewhere on the EESchema by a single click |
| 04.37 | We need two more resistors. |
| 04.39 | We can get the two resistors using the Place a component button. |
| 04.42 | But since we already have a resistor, let us see how to copy a component. |
| 04.48 | To copy a component, right click on the component and choose Copy Component. |
| 05.01 | A copy of the component will be tied to your cursor. |
| 05.05 | Place this resistor somewhere on EESchema by a single click. |
| 05.11 | This can also be done more quickly using the keyboard shortcut c.
|
| 05.16 | For this, keep the cursor on the component and then press c. |
| 05.22 | Again it will be tied to your cursor. |
| 05.27 | Click once to place it. |
| 05.30 | A list of shortcuts can be obtained by pressing Shift and ? (question mark) key. |
| 05.36 | Here is the list of keyboard shortcuts. |
| 05.40 | Close this window. |
| 05.43 | Click on EESchema window to open the component selection window. |
| 05.49 | Next we need two capacitors, electrolytic and ceramic. |
| 05.53 | Type cp1 to add electrolytic capacitor and click OK. |
| 06.00 | Type c to add ceramic capacitor and click OK. |
| 06.06 | We also need a Light Emitting Diode, know as LED. |
| 06.10 | In component selection window type led and click on OK. |
| 06.17 | Now we need a power supply i.e.Vcc and Ground terminals.
|
| 06.22 | On the right panel of EESchema, click on Place a power port button. |
| 06.29 | Click once on the EESchema to open the component selection window. |
| 06.34 | Click on List All button and you will see a list of various power notations. |
| 06.40 | Choose +5V (plus 5 volt) and click on OK. |
| 06.48 | Place the component by single click on the EESchema window |
| 06.52 | Similarly, to get the ground terminal, |
| 06.54 | choose ground from the list and click on OK |
| 07.01 | Let me choose the ground terminal |
| 07.08 | We also need a connector to connect the external power supply |
| 07.14 | Click on the EESchema to open the component selection window. |
| 07.19 | Click on List All button and you will see a list. |
| 07.24 | Choose conn option and click on OK. |
| 07.31 | Scroll down and choose CONN_2 from the list and click on OK.
|
| 07.41 | A two terminal connector will appear. It will be tied to your mouse pointer |
| 07.48 | Click once to place it. |
| 07.56 | Now we will arrange the components, by moving them to appropriate places. |
| 08.01 | We will use the shortcut key m for moving the components. |
| 08.04 | To move a component, keep the mouse pointer on a component, say resistor, and then press m. |
| 08.15 | We will place this resistor to the right of IC 555 by a single click on the EESchema. |
| 08.28 | We will use the keyboard shortcut key r for rotating the LED and aligning it vertically. |
| 08.40 | Now we will see how to interconnect or wire the components as per the circuit diagram. |
| 08.45 | Let us start with the interconnection of components. |
| 08.48 | On right panel of EESchema, Click on Place a wire button. |
| 08.56 | We will now interconnect two resistors. |
| 08.58 | We will connect wire by clicking on either nodes of both the resistors. |
| 09.11 | Now we will connect the 7th pin of IC 555 to the wire connecting the two resistor. |
| 09.18 | Click on the 7th pin of IC 555 to the wire connecting the two resistors. |
| 09.30 | Notice that this will automatically form a junction which appears as a node. |
| 09.35 | I have already interconnected the components and saved it. |
| 09.39 | I will now open and use this already made schematic to save time. |
| 09.44 | I will go to file menu & click on open. |
| 09.53 | A Confirmation window opens. Click on Yes. |
| 10.04 | I will choose project1.sch from the desired directory. |
| 10.18 | Let me resize this window first . |
| 10.22 | and then I will click on open. |
| 10.33 | Here is the schematic created earlier. |
| 10.36 | We would now see how to annotate components. |
| 10.39 | Annotation gives unique identification to each component. |
| 10.43 | Annotating will replace the question marks on the components with unique numbers.
|
| 10.50 | On top panel of EESchema, Click on “Annotate schematic” button. |
| 10.58 | This will open the Annotate Schematic window. |
| 11.02 | In this window, keep the default configuration. |
| 11.05 | Click on the Annotation Button. |
| 11.09 | This will warn you that it will annotate only the un-annotate components. |
| 11.13 | Click on OK. |
| 11.15 | Click on the Close button on the Annotate schematic window. |
| 11.20 | Notice that the question marks on the components are replaced with unique numbers. |
| 11.30 | Click on File |
| 11.37 | and choose Save whole schematic project to save this schematic. |
| 11.43 | Click on File and choose Quit. |
| 11.48 | This will close the EESchema window. |
| 11.50 | Now go to KiCad main window.
|
| 11.53 | Click on File and choose Quit |
| 11.56 | This completes the objective of this tutorial of creating circuit schematic in KiCad. |
| 12.01 | Let us summarize what we learnt in this tutorial |
| 12.05 | In this tutorial we learnt, |
| 12.07 | To use EESchema in KiCad for creating circuit schematic
|
| 12.11 | Annotation of circuit schematic. |
| 12.15 | Try the following Assignment, |
| 12.17 | Place component Inductor on EESchema using component selection window. |
| 12.24 | Explore shortcut keys a, x and y |
| 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. |
Contributors and Content Editors
Krupali, PoojaMoolya, Pratik kamble, Sakinashaikh, Sandhya.np14
