PoojaMoolya: Created page with "{| border="1" |- || '''Time''' || '''Narration''' |- || 00:01 || Welcome to the spoken tutorial on '''Subcircuit Builder''' in '''eSim'''. |- ||00:08 ||In this tutorial, usi..."

2022-09-05T09:31:51Z

Created page with "{| border="1" |- || '''Time''' || '''Narration''' |- || 00:01 || Welcome to the spoken tutorial on '''Subcircuit Builder''' in '''eSim'''. |- ||00:08 ||In this tutorial, usi..."

New page

{| border="1"
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|| '''Time'''
|| '''Narration'''

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|| 00:01
|| Welcome to the spoken tutorial on '''Subcircuit Builder''' in '''eSim'''.

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||00:08
||In this tutorial, using '''eSim''' we will learn to-

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||00:13
||Create a '''Subcircuit''' and

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||00:17
||Create a '''Component Schematic'''.

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||00:19
||To record this tutorial, we will use-

'''Ubuntu Linux OS''' version 16.04

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||00:28
||'''eSim''' version 2.0

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||00:32
||To practice this tutorial, you should know how to create and simulate a '''circuit''' in '''eSim'''.

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||00:40
||If not, watch the prerequisite '''eSim''' tutorials on this website.

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||00:46
||The '''subcircuit''' file always begins with the '''dot SUBCKT''' statement.

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||00:53
||'''Subname''' is the '''subcircuit component''' name.

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||00:58
||'''N1''','''N2''' are the nodes.

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||01:02
||The '''subcircuit''' ends with '''dot Ends''' followed by the '''subcircuit''' name.

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||01:09
||To launch '''eSim''', you need to double-click on the '''eSim''' icon on your '''Desktop'''.

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||01:16
||I have already opened '''eSim'''.

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||01:20
|| Let us now create a '''Subcircuit''' for a '''Half adder'''.

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||01:25
||On the '''eSim''' window, click on the '''Subcircuit''' button from the left toolbar.

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||01:32
||A '''subcircuit''' tab will open up.

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|| 01:36
||In the '''Subcircuit''' tab, click on the ''''New Subcircuit Schematic'''' button.

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||01:43
||A '''New Schematic''' pop up window appears.

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||01:47
||Enter '''Schematic Name''' as '''Halfadder underscore new'''.

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||01:54
||Click on the '''OK''' button.

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||01:57
||Now, click the '''Yes''' button in the '''confirmation''' dialog box.

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||02:02
||The '''schematic editor''' window opens up.

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||02:06
||The user can create a '''schematic''' or import an existing '''schematic'''.

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||02:13
||We will use the latter method.

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||02:16
||To create a new '''schematic''', you can refer to the previous tutorials in this series.

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||02:23
||I have already created a '''Half adder circuit''' using basic '''gates''' in '''eSim'''.

Pause the video here.

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||02:32
||Download the '''Half Adder Basic Gates''' project file from the '''Code''' file section.

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||02:38
||Extract and save the project file on the '''Desktop'''.

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||02:43
||On '''eeschema''', click on the '''File''' option from the top menu.

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||02:49
||Select '''Append Schematic Sheet''' option.

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||02:54
||In the '''Confirmation''' dialog box, click on the '''Yes''' button.

Click on '''Desktop'''.

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||03:01
||Double-click on '''Half adder basic gates''' folder.

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||03:06
||The '''schematic''' file, '''sch''' will be selected.

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||03:11
||Click on the '''Open''' button in the file window.

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||03:15
||You can see the '''schematic''' of the '''Half adder''' is added to the '''editor'''.

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||03:22
||Press the '''F1''' key, to zoom in the '''schematic'''.

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||03:25
||Now we will connect '''ports''' to the '''input''' and '''output terminals''' of the '''gates'''.

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||03:32
||Click on the '''Place component''' tool from the right toolbar.

Click on the '''editor'''.

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||03:40
||In the '''Filter''' field, type '''eSim underscore Miscellaneous'''.

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||03:46
||Select '''PORT''' and press the drop-down arrow.

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||03:52
||Click on '''Unit A''' and click on the '''OK''' button.

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||03:58
||'''Port Unit A''' will be tied to the cursor.

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||04:02
||Place it near the '''input pin 1''' of the '''XOR gate'''.

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||04:07
||Similarly, place '''Port Unit B''', near the '''input pin 1''' of the '''AND gate'''.

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||04:14
||Place '''Port Unit C''' and '''Port Unit D''' near the '''output pin''' of the '''XOR gate''' and '''AND gate''' respectively.

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||04:24
||Here the '''Port unit''' indicates '''pins''' of the '''subcircuit'''.

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||04:30
||'''Unit A''' is '''pin 1, Unit B, C''' and '''D''' are the '''pin''' number '''2, 3, 4''' of the '''subcircuit''' respectively.

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||04:41
||To rotate the '''Port C''', place the cursor on '''Port Unit C''' and press the '''R''' key.

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||04:49
||A '''clarify selection''' pop-up window appears.

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||04:53
||Select '''Port U''' and press the '''R''' key.

Similarly, rotate '''Port D'''.

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||05:02
||Connect the '''ports''' to the '''pins''' with '''wires'''.

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||05:06
||Place the cursor on the '''pin1''' of '''PORT A''' and press the '''W''' key to start the '''wire'''.

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||05:15
||Drag it to the '''wire''' connecting the '''pin 1''' of '''XOR gate''' and '''AND gate'''.

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||05:22
||Click once to end the '''wire'''.

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||05:26
||A '''junction''' will be placed on the '''wire'''.

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||05:30
||Similarly, connect all the '''ports''' to the '''pins''' as shown here.

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||05:36
||Let us now '''Annotate''' the '''schematic'''.

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||05:40
||Click on the '''Annotate schematic components''' icon from the top toolbar.

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||05:47
||Keep the default settings.

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||05:50
||Click on the '''Annotate''' button.

Click on the '''OK''' button.

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||05:56
||Save the '''schematic''' by pressing '''Ctrl+S''' keys together.

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||06:02
||Let us generate a '''netlist''' for the '''schematic'''.

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||06:06
||Click on the '''Generate netlist''' icon from the top toolbar.

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||06:11
||Select the '''Spice''' tab and check the '''Default format'''.

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||06:17
||Click on '''Generate''' button and then click the '''Save''' button.

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||06:23
||This creates a '''KiCad netlist''' file.

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||06:27
||Now, let us go back to the '''eSim''' window.

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||06:31
||In the '''Subcircuit''' tab, click on the '''Convert Kicad to Ngspice''' button.

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||06:38
||You can specify the '''transient analysis parameters''' or leave it blank.

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||06:45
||I am leaving these values blank.

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||06:49
||If any '''Device model''' or '''Subcircuit''' is used, specify them under '''Device modeling''' or '''Subcircuit''' tab.

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||06:58
||In the '''KiCad to Ngspice''' tab, press the '''Convert''' button.

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||07:03
||Click on the '''OK''' button in the '''Information''' dialog box.

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||07:08
||This creates a '''Ngspice netlist''' of the '''subcircuit''' created.

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||07:14
||You can see, the '''subcircuit Half Adder new''' is added to the '''subcircuit library''' in the '''eSim''' directory.

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||07:23
||Now, let us create a '''component schematic''' for the '''Half Adder subcircuit'''.

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||07:29
||The '''components''' are also referred to as '''Parts''' or '''symbols'''.

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||07:34
||Go back to the '''eSim''' editor of '''Half Adder schematic. '''

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||07:39
||Click on the '''Library Editor''' icon from the top toolbar.

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||07:44
||The '''schematic''' window of the '''Part Library Editor''' opens up.

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||07:49
||You can also find the '''Library Editor''' option from the '''Tools''' option on the top menu.

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||07:56
||Click on the '''File''' option from the top menu.

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||07:59
||Click on the '''Current Library''' option.

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||08:03
||Choose '''eSim underscore Subckt''' option.

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||08:08
||Click on the '''OK''' button.

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||08:11
||The current '''library path''' of the '''library''' selected is displayed at the top of the '''Part Library editor''' window.

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||08:20
||To create a new '''component''', click on '''Create a new Component''' icon from the top toolbar.

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||08:28
||A '''Component Properties''' window opens up.

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||08:32
||Enter the following.

'''Component name''' as '''HA underscore new'''.

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||08:39
||'''Default Reference Designator''' as '''X'''.

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||08:43
||The '''designator''' is different for each '''eSim component'''.

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||08:48
||'''D''' is used for '''Diode'''.

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||08:51
||'''Q''' is used for '''BJT''' and so on.

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||08:55
||Keep the default settings.

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||08:57
||Click on the '''OK''' button in the window.

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||09:01
||Press '''F1''' key to zoom in the '''schematic name''' and '''designator'''.

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||09:07
||You can add a '''rectangle, circle, arc''' or '''polygons''' as the '''component body'''.

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||09:15
||I will add a '''rectangle''' as a '''component body'''.

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||09:20
||Click on '''Add graphic rectangle to component body''' tool from the right toolbar.

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||09:27
||Click on the '''editor'''.

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||09:30
||Click and drag the '''rectangle'''.

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||09:34
||Click again to end the '''rectangle body'''.

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||09:38
||Arrange the '''designator''' and name of the '''component'''.

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||09:42
||Place the cursor on the '''name''' and '''designator''' and press the key '''M'''.

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||09:48
||Now add '''input''' and '''output pins'''.

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||09:53
||Click on '''Add pins to component''' tool from the right toolbar.

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||09:59
||Click on the '''Editor'''.

'''Pin Properties''' window will appear.

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||10:04
||Enter: '''Pin name''' as '''A'''.

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||10:09
||'''Pin Number''' as '''1'''.

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||10:11
||'''Orientation''' as '''Right'''.

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||10:14
||'''Electrical Type''' as '''Input'''.

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||10:17
||'''Graphic Style''' as '''Line'''.

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||10:20
||Click on the '''OK''' button in the window.

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||10:24
||The '''pin''' is tied to the cursor. Connect it as shown.

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||10:30
||Click on the '''editor''' again.

In a similar way, add '''Pin number 2''' with '''Pin name''' as '''B'''.

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||10:40
||Click again on the '''editor'''.

Enter the following.

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||10:45
||'''Pin name''' as '''Sum'''.

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||10:48
||'''Pin Number''' as '''3'''.

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||10:51
||'''Orientation''' as '''left'''.

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||10:54
||'''Electrical Type''' as '''output'''.

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||10:57
||'''Graphic Style''' as '''Line'''.

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||11:00
||Click on the '''OK''' button.

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||11:04
||In a similar way add '''Pin number 4''' with '''Pin name Cy'''.

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||11:11
||Let us save the '''schematic symbol'''.

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||11:15
||Click on '''File''' option from the top menu.

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||11:19
||Click on the '''Save Current Library''' option.

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||11:23
||Click the '''Yes''' button in the '''confirmation''' box.

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||11:28
||You can see here, the '''component''' is added to '''eSim underscore Subcircuit library'''.

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||11:36
||Click once again the '''Yes''' button in the '''confirmation''' box.

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||11:41
||Close the '''Part Library editor''' window.

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||11:45
||This will save the new component to the current library '''eSim underscore Subcircuit '''.

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||11:52
||The '''eSim underscore Subckt library''' file is found in the '''Kicad''' library as shown here.

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||12:00
||As you can see the '''component HA underscore new''' is defined here.

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||12:06
||If you want to delete any '''component''', you can also delete the '''component''' in this file.

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||12:13
||Now we can verify the created '''Subcircuit''' and its '''component schematic'''.

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||12:20
||You can use the '''Half Adder''' example project from the '''eSim Examples''' folder or create a new project.

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||12:27
||You can also download the example '''HA underscore Test''' from the '''Code''' file section.

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||12:36
||You can verify the '''component''' and '''subcircuit''' created.

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||12:41
||I have created a new project '''HA underscore Test'''.

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||12:46
||The project is already added to '''eSim''' window under the '''Project''' section.

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||12:52
||Select '''HA test''' and click on the '''Open schematic''' button from the left toolbar.

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||13:00
||It directs us to the '''eSim schematic''' window.

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||13:04
||You can see, the '''HA underscore new component''' will be present under '''eSim_Subckt library'''.

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||13:13
||Let us go back to the '''eSim''' window.

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||13:16
||In the '''Kicad to Ngspice analysis''' tab, I have already specified '''transient parameters'''.

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||13:23
||In the '''Source details''' tab, the '''voltage sources''' are assigned as '''5''' volts.

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||13:29
||In the '''Subcircuit''' tab, the path of the '''Halfadder underscore new''' is added.

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||13:36
||You can see the '''Ngspice plots''' and '''terminal'''.

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||13:41
||Since both the '''inputs''' are '''5''' volts, '''Sum''' will be '''0''' and '''carry''' will be '''5''' volts.

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||13:48
||You can also see the values in the '''Ngspice terminal'''.

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||13:53
||Close the '''Ngspice terminal''' and '''plots'''.

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||13:57
||In the '''Python plot''' window, check the '''Sum''' and '''Cy''' node.

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||14:03
||Click on the '''Plot''' button.

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||14:06
||The '''sum''' is '''0''' volts and '''Carry''' is '''5''' volts.

Close the '''Python plot''' window.

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||14:14
||In this tutorial, we learnt how to,

|-
||14:17
||Create a '''Subcircuit''' and Create a '''Component Schematic'''.

|-
||14:24
||Do you have questions in this '''Spoken Tutorial'''?

Please visit this site.

|-
||14:31
||For any general or technical questions on '''eSim''', visit the '''FOSSEE''' forum and post your question.

|-
||14:39
||The '''FOSSEE''' team coordinates the '''Circuit Simulation''' project.

|-
||14:44
||We give '''Certificates''' and '''Honorarium''' to the contributors.

For more details, please visit this site.

|-
||14:53
||The '''FOSSEE''' team coordinates the '''Lab Migration''' project.

For more details, please visit this site.

|-
||15:02
||'''Spoken Tutorial''' Project is funded by '''NMEICT''', '''MHRD''', '''Govt. of India'''.

For more details, visit this site.

|-
||15:11
||This is Gloria N from IIT Bombay signing off.

Thank you

ESim/C2/Subcircuit-Builder/English-timed - Revision history

PoojaMoolya: Created page with "{| border="1" |- || '''Time''' || '''Narration''' |- || 00:01 || Welcome to the spoken tutorial on '''Subcircuit Builder''' in '''eSim'''. |- ||00:08 ||In this tutorial, usi..."