Schematic from PCB drawing

Discussion in 'General Electronics Chat' started by solo2racr, Oct 6, 2013.

  1. solo2racr

    solo2racr

    Joined:
    Aug 21, 2013
    Messages:
    141
    Likes Received:
    0
    Location:
    North Carolina U.S.
    I have never done this and was wondering if anyone had any tips to make this as easy and accurate as can be.
     
    solo2racr, Oct 6, 2013
    #1
    1. Advertisements

  2. solo2racr

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Joined:
    Jan 21, 2010
    Messages:
    22,996
    Likes Received:
    2,029
    Location:
    Mid way between Beijing and the Ronne Ice Shelf
    It's non-trivial.

    Have a good clean image of the board and both (or all) layers. Then identify the componets and try to untangle the connections. It's often useful to identify the "main" part -- an op-amp, or a microcontroller, etc, then draw everything around it in a way that looks sensible.

    You need to be very careful that you haven't missed a connection. It may be useful to colour them in as you go.

    After you've drawn it once, see if you can untangle it and make it look nice.

    Then check for obvious errors and refer back to the PCB to see if you made a mistake.
     
    (*steve*), Oct 6, 2013
    #2
    1. Advertisements

  3. solo2racr

    solo2racr

    Joined:
    Aug 21, 2013
    Messages:
    141
    Likes Received:
    0
    Location:
    North Carolina U.S.
    So, work it out in segments as opposed to trying the sort it out in it's entirety. I was thinking to start, trace out the ground path. Then work from the +/- voltages from there.
     
    solo2racr, Oct 6, 2013
    #3
  4. solo2racr

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Joined:
    Jan 21, 2010
    Messages:
    22,996
    Likes Received:
    2,029
    Location:
    Mid way between Beijing and the Ronne Ice Shelf
    I guess that you need to have some sort of system. I'd agree that tracing power and grounds is a good thing, but they're often easier than the signal path because you know that they are going everywhere (usually).
     
    (*steve*), Oct 7, 2013
    #4
  5. solo2racr

    Rleo6965

    Joined:
    Jan 22, 2012
    Messages:
    585
    Likes Received:
    9
    Location:
    Quezon City, Philippines
    Before I use paper and pencil to draw the schematic diagram while tracing the pcb. Now , I use schematic drawing software . It's easier to draw lines , edit and drag components to its proper place for easier analysis. I use DesignSparkPCB5 software.

    You can use simpler schematic drawing software if you want.
     
    Rleo6965, Oct 7, 2013
    #5
  6. solo2racr

    KMoffett

    Joined:
    Jan 21, 2009
    Messages:
    628
    Likes Received:
    58
    Location:
    Minnesota USA
    As Steve said make good images of both sides. Highlight over each PCB trace on the paper image as you replicate it on the paper/CAD schematic. This makes sure that you don't leave connections out.

    Ken
     
    KMoffett, Oct 14, 2013
    #6
    1. Advertisements

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
  1. Terry Vacha

    Schematic drawing program

    Terry Vacha, Feb 13, 2005, in forum: Electronic Basics
    Replies:
    5
    Views:
    1,281
    Terry Vacha
    Feb 14, 2005
  2. BrunoG

    What schematic drawing tool do you use ?

    BrunoG, Dec 20, 2005, in forum: Electronic Design
    Replies:
    25
    Views:
    778
    Joerg
    Dec 28, 2005
  3. Superman
    Replies:
    6
    Views:
    794
  4. hiurl@163.com
    Replies:
    1
    Views:
    2,594
    tamil
    Feb 7, 2006
  5. S45

    drawing schematic from data sheet

    S45, Jan 18, 2007, in forum: Electronic Design
    Replies:
    5
    Views:
    655
    PeteS
    Jan 19, 2007
  6. Remi COOLS

    Search software for electrical schematic drawing

    Remi COOLS, Jul 26, 2004, in forum: Electrical Engineering
    Replies:
    2
    Views:
    550
    St Dom
    Jul 26, 2004
  7. chidinma onyejuruwa

    PCB from speakers broken please help

    chidinma onyejuruwa, Aug 29, 2016, in forum: Electronics Repair
    Replies:
    12
    Views:
    321
    davenn
    Sep 6, 2016
Loading...