ESim/C2/Laying-Tracks-on-PCB/English-timed

From Script | Spoken-Tutorial
Revision as of 17:55, 17 June 2021 by Pratik kamble (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Time Narration
00:01 Welcome to the spoken tutorial on “Laying Tracks on Printed Circuit Board”.
00:07 In this tutorial, we will learn to -

Place tracks on printed circuit board.

Add dimension and text on Silkscreens.

Generate Gerber files and view them.

00:20 This tutorial is recorded using -

Ubuntu Linux OS version 16.04

eSim version 1.1.2

00:31 To practice this tutorial, you should know to:

Read a PCB netlist.

Draw outline and setup design parameters for a board.

Move and orient footprints.

00:43 If not, see the prerequisite eSim tutorials on this website.
00:48 I have already opened eSim on my machine.
00:50 Let us open example 7805VoltageRegulator. I have saved this on my Desktop.
00:59 I have already read the netlist, created an outline and set the design parameters.
01:05 Click on Open Project from the left toolbar.
01:09 And navigate to the location where you have saved this.
01:13 I will browse to Desktop. Click on 7805VoltageRegulator.
01:19 Click on the Open button at the bottom right corner of this window.
01:24 Click on Open Schematic button on the left toolbar, to open the schematic.
01:30 Using F1 I will zoom into the schematic.
01:34 Click on Tools button at the top toolbar, and select Layout Printed Circuit Board. Let me resize this window.
01:45 I have moved and oriented the footprints, such that there is minimum intersection between airwires.
01:52 Let us see how to convert the airwires into tracks.
01:56 Under the Layer tab on the right side of the Pcbnew window, click on B.Cu once.
02:03 Layer selected will be indicated by a blue arrow on the left side of B.Cu.
02:09 Click on Place button in the top toolbar, and select Track from the menu.
02:15 Let us place tracks for connecting the capacitor C2 to the output terminal J2.

I will zoom into the layout screen.

02:24 Click on node 1 of C2.
02:28 Let us drag this track from node 1 of C2 to node 1 of J2, by dragging the cursor till node 1 of J2.
02:36 Double-click on node 1 of J2 to complete the track.
02:40 Similarly connect all the other nodes except the Ground nodes.
02:45 Press Esc key to exit the Place Track tool.
02:49 Ground nodes are denoted by GND designation.
02:54 Let us place a ground plane to connect all the ground nodes.
02:58 Click on Add filled zones button located at the right side of the Pcbnew window.
03:04 Click once, slightly above the top-left corner of the board outline.
03:09 Let us place the ground plane on Bottom Copper layer.
03:13 To do so, click on B.Cu under Layer column.
03:18 Click on GND under Net column.
03:22 Click on OK button at the bottom right corner of the Copper Zone Properties window.
03:28 Drag the cursor with the pencil icon horizontally towards the right. 
03:34 Click once, slightly above the top-right vertex of the outline.
03:39 Let us move this cursor vertically, towards the bottom-right vertex of the board.
03:45 Click once slightly below bottom-right vertex.
03:49 Similarly, we will draw a rectangular ground plane outline around board outline.
03:56 Please do not confuse board outline with ground plane outline.
04:01 I have completed the ground plane outline.
04:04 Note that the ground plane outline should lie outside the board outline.
04:09 Right-click inside the board outline.
04:12 Click on Fill or Refill all zones button from the menu.
04:17 We have added a ground plane to the board.
04:20 Press Esc key to exit the Add filled zones tool.
04:25 Let us now perform Design Rule Check i.e DRC, for the layout we created.
04:32 It checks whether the design created is compliant with the Design Rules set earlier.
04:38 Click on Perform Design Rules check present at the top of the Pcbnew toolbar.
04:44 Click on Start DRC.
04:47 This checks if any design element violates the design parameters set earlier.
04:52 If there are any design errors, they will be displayed in Error Messages window.
04:58 In my case, there are no errors.
05:01 Click OK button at the bottom right corner to exit the DRC Control window.
05:07 Now let us see how to add text on our board.
05:11 Let us click on F.Silks layer to place text on the Front Silk Layer.
05:19 Click on Place button from top toolbar and select Text option from the dropdown menu.
05:27 Click once on the Pcbnew window.
05:31 I will type 7805VoltageRegulator in the Text window.
05:37 Click on OK button at the bottom right corner of the Text Properties window.
05:43 The typed text will be tied to the cursor.
05:47 Drag cursor to bottom right corner of the layout screen and click once.
05:53 We can see the text is placed in light blue color.
05:58 Please make sure to click inside the board outline.
06:02 Now let us see how to add dimensions to our board design.
06:07 Click on Margin layer.
06:10 Click on Place at top toolbar and select Dimension option.
06:16 Click once on either vertex of the board layout. I have chosen the top-right vertex.
06:23 Let us drag the cursor towards the bottom right vertex in a straight line.
06:30 Press Enter key twice. The dimension will be placed for the vertical edge of the board.
06:37 We will perform similar steps for placing horizontal dimensions of the layout.
06:43 Let us press Ctrl and S keys together to save the work.
06:49 Let us now create gerber files for this board.
06:53 Click on Plot button at the top of the Pcbnew toolbar.
06:58 Click on the tab below Plot format. Select Gerber out of the 6 options.
07:05 Let us select the layers for which we want the gerber files.
07:10 I will select F.Cu, B.Cu, F.Silks and Edge.Cuts and Margin layers by clicking on the boxes to the left.
07:24 Click on Browse button at the top right of Plot window.
07:29 Let us navigate to the desired directory where we want to save the gerber files.
07:35 Click on Desktop, double-click on 7805VoltageRegulator.
07:43 Click on Open button at bottom right corner of Select Output Directory window.
07:50 Click on No button of Plot Output Directory window.
07:57 Click on Plot button located at the bottom of Plot window.
08:02 Acknowledgement messages will appear in the Messages window.
08:06 Let us generate the drill file in gerber format for our designed board.
08:11 Click on Generate Drill File at the bottom of the Plot window.
08:16 Click on Browse button at top right corner of Drill Files Generation window.
08:23 I will navigate to Desktop/7805VoltageRegulator.
08:29 Click on Open button at the bottom right corner of Drill Files Generation window.
08:35 If Plot Output Directory window appears, Click on No button in the middle of Plot Output Directory window.
08:42 Click on Gerber option placed in the middle of Drill Files Generation window if not selected.
08:52 Click on Drill File option present at the right side of Drill Files Generation window.
08:58 An acknowledgement message will appear in the Messages window.
09:02 Click on Close button in the middle of Drill Files Generation window.
09:08 Click on Close button at the bottom right corner of Plot window.
09:13 Let us save our work by pressing Ctrl and S keys simultaneously.
09:19 Now we will view the gerbers created.
09:22 Open the terminal by pressing Ctrl, Alt and T keys together.
09:31 Type gerbview and press Enter .
09:35 Click on File from the top left corner, and select Load Gerber File option.
09:43 Let us browse to directory where we have saved the gerber files.
09:48 I will click on Desktop, and then double-click on 7805VoltageRegulator.
09:56 Press Ctrl and A keys at the same time to select all the gerber files.
10:02 Click on Open button at the bottom right corner of the Open Gerber file window.
10:08 We can see the PCB Layout we created in Gerber format.
10:13 This is the FR4 grade copper cladded sheet on which we will transfer our design to.
10:19 After etching and drilling appropriate holes, this is how the board will look.
10:24 Components can now be mounted and soldered on this board.
10:28 This is how the board looks after components are soldered on it.
10:32 With this, we come to the end of this tutorial. Let us summarize.
10:38 In this tutorial, we learnt to :

Place tracks on printed circuit board.

Add dimension and text on Silkscreens.

Generate Gerber files and view them.

10:51 Please post your timed queries in this forum.
10:54 Please post your general queries on eSim in this forum.
11:00 FOSSEE team coordinates the Lab Migration project.
11:06 FOSSEE team coordinates the Circuit Simulation project.
11:10 Spoken Tutorial Project is funded by NMEICT, MHRD, Govt. of India.

For more details, visit this website.

11:17 This is Saurabh from IIT Bombay, signing off. Thank you.

Contributors and Content Editors

Pratik kamble