View source for ESim/C2/Setting-Parameters-for-PCB-designing/English




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|| '''Visual cue'''
|| '''Narration'''
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|| '''Show Slide:'''

Opening Slide
|| Welcome to the '''spoken tutorial '''on “'''Setting Parameters for Designing PCB'''”.
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|| '''Show Slide:'''

Learning Objectives
|| In this tutorial, we will learn to -
* Read a''' PCB netlist.'''
* Draw '''outline '''and setup '''design parameters''' for a '''board.'''
* Move and orient '''footprints'''.

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|| '''Show Slide:'''

Systems Requirements
|| This tutorial is recorded using -
* '''Ubuntu Linux OS''' version 16.04
* '''eSim '''version 1.1.2

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|| '''Show Slide:'''

Prerequisites,
|| To practice this tutorial, you should know:
* To design and '''simulate''' a '''circuit''' in '''eSim.'''
* To map '''components''' with '''footprints''' in '''CvPcb.'''
* To create '''netlist''' for '''PCB Design''' in '''eSim.'''


If not, watch the prerequisite '''eSim''' tutorials on this website.
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|| '''System Computer:'''

eSim startup window
|| I have opened''' eSim''' on my machine.
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|| '''Narration only'''
|| Let us open '''7805VoltageRegulator '''example.
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|| '''Slide with no narration'''

This file is available in the '''Code Files''' link.

Please download and save this file to your '''Desktop'''.


We will use this file for practice of this tutorial.
||
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''eSim main window:'''

Click on '''Open Project '''

>>

Select '''Desktop '''location

>>

Click on '''7805VoltageRegulator '''

>>

Click '''Open'''
|| Click on '''Open Project '''button from the left toolbar.


Click on '''Desktop'''.


Click on '''7805VoltageRegulator.'''


Click on '''Open '''button at the bottom right corner.
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|| '''eSim main window : '''

Click on''' Open Schematic'''
|| Click on '''Open Schematic''' button from left toolbar, to open the '''schematic'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''eSim Schematic Editor '''Window:

Click on''' Cvpcb '''shortcut at the top toolbar.
|| The '''schematic''' will open.

Click on '''Cvpcb '''shortcut at the top toolbar.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Cvpcb '''Window''':'''

Hover cursor over the components and their mapped footprints.
|| 

I have mapped the '''components''' with appropriate '''footprints '''and generated '''netlist '''for it. 

I will switch back to the '''eSim schematic editor'''.

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|| '''eSim Schematic '''Window''': '''

Click on '''Tools ''' >>  Click '''Layout Printed Circuit Board'''


Click '''Yes'''
|| 

Click on '''Tools''' at the top toolbar and select the '''Layout Printed Circuit Board''' option.


If you get a '''Confirmation''' box, click on '''Yes'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''Window''': '''

Show empty layout screen
|| An empty '''layout screen''' is seen in the '''Pcbnew '''window.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew Window:'''

Click on '''Read netlist '''
|| On the top toolbar, click on '''Read netlist.'''

'''Netlist''' window will appear.
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|| '''Netlist '''Window''' :'''

Click on '''Browse>> '''navigate to '''Desktop.'''




Double click on '''7805VoltageRegulator '''

>>

Click on '''7805VoltageRegulator.net''' 

>>

Click on '''Open'''
|| Click on '''Browse '''button, and navigate to '''Desktop '''location.


Double-click on '''7805VoltageRegulator.'''


Click on '''7805VoltageRegulator.net'''.


Click on '''Open '''button at the bottom right corner of this window.
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|| 
|| The '''netlist''' will be loaded.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Netlist Window:'''

Click on '''Read Current Netlist '''

'''>>'''


Hover cursor over '''Messages '''window 
|| Click on '''Read Current Netlist '''button at the top right corner of '''Netlist '''window.


If there is an error it will appear in red color in the '''Messages''' window.

In my case, there are no errors.

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|| Click on '''Close'''
||Click on the '''Close '''button at the top right corner of the '''Netlist '''window.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew Window:'''

Hover mouse over footprints in the '''Pcbnew '''window
|| The''' footprints''' mapped with the '''components''' appear on '''layout screen''' in a bundled manner.
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|| 
|| Let us draw an '''outline''' for the '''board''' we are creating.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''':'''

Right-click on the''' layout screen'''

>>


Click on '''Select working layer'''


Click on '''Edge.Cuts'''
|| To place an '''outline''' for the '''board''' on '''Edge.Cuts''' '''layer,''' right-click on the '''layout screen.'''


Click on '''Select working layer.'''


Click on '''Edge.Cuts.'''
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew''' window ''': '''

Hover cursor over the rightmost panel.

>>

Hover cursor over '''Layer'''.
|| Alternately, working '''layer''' can be selected from the right side of the '''panel'''.


Under the '''Layer '''option, working '''layer'''s of a '''board''' are listed.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
||Hover cursor over '''F.Cu, B.Cu'''
||'''Front Copper '''and''' Bottom Copper''' will be used for placing '''tracks'''.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
||Hover cursor over '''F.Silks, Margin '''and''' Edge.Cuts '''layers


Click on''' Edge.Cuts >>''' Hover mouse over the '''blue arrow'''
||'''Front Silk, Edge.Cuts '''and''' Margin layer'''will be used for placing text and dimension.


Click on the right side of '''Edge.Cuts layer. ''' A '''blue arrow '''will appear next to the '''Edge.Cuts.'''
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''': '''

Click on '''Place ''' >>  Click on '''Line or Polygon '''from the dropdown menu
|| 

Click on '''Place '''at the top toolbar of '''Pcbnew '''window.


Click on '''Line or Polygon '''from the menu.

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||Narration only 
||A pencil tied to your cursor will appear on the layout screen. 

We will use this to draw the '''outline'''.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| Click on the '''layout screen'''>> Move the cursor horizontally
||Click on the '''layout screen '''and move the pencil horizontally to a certain extent.

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|| Click on the editor 
||Click on the location where we want to finish the line.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| Hover cursor over the yellow line



||A yellow line will appear on the '''layout screen'''.


We will draw a rectangular shaped '''outline''' using the method demonstrated.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window ''':'''

Show completed rectangular border
|| We have created a rectangular shape as the '''outline''' for the '''board'''.


Press '''Esc''' key to exit '''Line or Polygon''' tool.
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|| 
|| Now let us separate and place the '''footprints'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''' :'''

Press '''F1 '''or use the scroll button to zoom in >> hover cursor in circular fashion
|| I will now zoom in to see the '''footprints''' on the '''layout''' clearly, using the '''F1''' key.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
||Right click on '''Screw_Terminal_01x02 '''text

>>Select '''Footprint J1 on F.Cu''' >> Select the''' Move '''option 
||Right-click on '''Screw underscore Terminal underscore 01x02'''. 

Select '''Footprint J1 on F.Cu''' and select the '''Move '''option. 

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||Move the cursor towards left >> 


Click once on '''Pcbnew Window'''
||Move the cursor tied to the '''footprint''' horizontally towards left.


Click once on the '''layout screen '''to place the''' footprint.'''
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window:

Right click on '''Screw_Terminal_01x02 '''


Select '''Footprint J1 on F.Cu'''

>>

Select the '''Rotate + '''option
|| To properly orient this '''footprint''', right-click on '''Screw underscore Terminal underscore 01x02.'''


Select '''Footprint J1 on F.Cu.'''


Let us select the '''Rotate + '''option.
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|| 
|| Similarly we will move and orient all other '''footprints''', according to our design.


All the '''components''' should be inside the rectangular '''outline''' drawn.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''':'''

Press '''Shift''' and '''?''' key together

>>

Hover mouse over '''Hotkeys List '''window
|| Press '''Shift''' and '''?''' keys together.


This will open all the keyboard shortcuts available under '''Hotkeys List '''window.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| 
|| We can use '''Hotkeys''' or the demonstrated methods for placing and orienting the '''footprints'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| Click '''Close'''
|| Click on '''Close '''button at bottom right corner of the '''Hotkeys List '''window.
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|| 
|| You may or may not see white wires, representing interconnected '''footprints'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''' :'''

Click on '''Show or Hide board ratsnest'''
|| If you do not see them, click on '''Show or Hide board ratsnest''' button at the '''panel''' of '''Pcbnew '''window.


White wires are called as '''airwires'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''' :'''

Show moved and oriented '''footprints'''
|| I have already moved and oriented the '''footprints''' to get minimum intersection between '''airwires'''.
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|| 
|| Let us set the '''parameters''' to place '''tracks''' on the '''layout'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''':'''

Click on '''Design Rules'''

'''>> '''Click on '''Design Rules''' from menu
|| Click on '''Design Rules '''option given at the top side of the toolbar.


Click on '''Design Rules '''from the menu.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Design Rules Editor '''window''' :'''


Click on window below '''Track Width'''


Press '''backspace '''key thrice 


Enter the number '''1.2'''
|| We will change the default '''track''' width from 0.25 mm to 1.2 mm.

Click on the window below '''Track Width.'''


Let us clear the present value using '''Backspace '''key.


Type the number '''1.2.'''
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|| 
|| This will make all '''tracks''' placed in future, of '''1.2 millimeter''' width.


You can select the '''track''' width according to your requirements.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Design Rules Editor Window :'''

Click on '''Global Design Rules '''tab

>>

Click on the tab in front of '''Min track width.'''

>>

Press '''backspace''' key thrice


>> Enter the number '''1.2'''
|| Click on '''Global Design Rules''' at the top of the '''Design Rules Editor''' window.


Click on the tab in front of '''Min track width.'''


Let us clear the present value using '''Backspace''' key.


Then type the number '''1.2 '''in this space.
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|| 
|| This ensures that any '''track''' placed on any '''layer,''' is of minimum 1.2 mm width.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Design Rules Editor''' window:

Click '''Ok'''
|| Click on the '''Ok '''button at the bottom right corner.
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|| 
|| Now let us check the '''drill hole''' size of '''X1''', that is '''Lm_7805'''.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window''':'''

Place cursor on '''Node 1''' of '''X1''', Press '''E '''key.
|| Place cursor on '''Node 1''' of '''X1''' and press '''E''' key.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| 
|| '''Pad Properties '''window will appear.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pad Properties '''window''':'''

Hover cursor over '''Drill '''block from the top right corner of '''Pad Properties Window'''


Hover cursor over '''Size X:''' 
|| We can see the '''drill hole '''properties such as shape, size of this particular '''pad'''.


We can see the default '''drill hole''' size for this particular '''pad''' is 1 millimeter.
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|| 
|| The default '''drill hole''' size and shape for different '''footprints''' may vary.


We can change it according to our need.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| Click '''Ok'''
|| Click on the '''Ok '''button at the bottom right corner of the '''Pad Properties''' window.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Pcbnew '''window:

Press '''Ctrl '''and '''S '''keys together
|| Let us press '''Ctrl '''and '''S '''keys''' '''together to save the work.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| 
|| With this, we come to the end of this tutorial.

Let us summarize.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Show Slide:'''

Summary
|| In this tutorial, we learnt to :
* Read a''' PCB netlist.'''
* Draw '''outline '''and setup '''design parameters''' for a '''board.'''
* Move and orient '''footprints'''.

|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Show Slide:'''

'''Forum'''
|| Please post your timed queries in this forum. 
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|| '''Show Slide:'''

'''FOSSEE Forum'''
|| Please post your general queries on eSim in this forum. 
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|| '''Show Slide:'''

'''Lab Migration'''
|| '''FOSSEE''' team coordinates the '''Lab Migration''' project. 
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|| '''Show Slide:'''

'''Circuit Simulation'''
|| '''FOSSEE''' team coordinates the '''Circuit Simulation''' project. 
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|| '''Show Slide:'''

'''Acknowledgment'''

[http://spoken-tutorial.org/ http://spoken-tutorial.org]
|| '''Spoken Tutorial''' Project is funded by '''NMEICT, MHRD''', Govt. of India.

For more details, visit this website.
|- style="background-color:#ffffff;border:1pt solid #000000;padding:0.176cm;"
|| '''Thank you Slide'''
|| This is Saurabh from '''IIT Bombay''' signing off.

Thank you.
|-
|}