Solved

How to convert captured and printed PCB (Printed Circuit Board) from the picture to real one with true dimensions?

Posted on 2013-11-05
1
706 Views
Last Modified: 2013-11-06
I got a picture with PCB that is in the attachment. I don't know the true size(dimensions)  of that PCB. But I know the spacing between the pins of the microcontroller that is installed on that PCB. How can I get a true dimension of that PCB to have it printed on the paper? The details about device I'd like to make at http://www.coolish.ru/nixie and the Printed Circuit Board at http://www.coolish.ru/nixie/kicad_3.PNG (just in case). May be you know some software that can measure the distance between the various parts of the graphic objects in real time, while I am moving cursor over them(the mouse over PCB on vertical and horizontal in my case).
Here is the algorithm I am following to reach my goal:
1) I am taking a snapshot of picture with PCB with Ashampoo Snap
2) Pasting that snapshot in Word
3) Printing out that snapshot
4) Getting the real distance between the holes of PCB by measuring the spacing between the pins of purchased microcontroller
5) Calculating the scaling factor K=Ptrue/P, where Ptrue-the real spacing between the holes on PCB; P-the measured spacing between the holes on the PCB printed at step 3)  
6) Working on my graphic object (snapshot of PCB), by stretching it out/squashing on horizontal, to get the real distance between left and right edges of PCB, so that Dtrue=D*K, where Dtrue-real distance between left and right edges of PCB; D-measured distance on horizontal of printed PCB at step 3), saving the proportions between the tracks and holes of PCB (this feature is built-in to Word and ticked by default)
Hereby I have a problem at step 6), because I can't determine the distance between left and right edges of the PCB in mm. The top ruler in Microsoft Word is very rude for my purpose. So, how to measure that D in mm, so as to set the required Dtrue in mm in Word?
kicad-3.PNG
kicad-2.PNG
kicad-1.PNG
IMG-2514.JPG
IMG-2513.JPG
0
Comment
Question by:dmitrij75
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 49

Accepted Solution

by:
dbrunton earned 500 total points
ID: 39625505
Use Irfanview http://www.irfanview.com/

It is a graphics viewer which is free for use.

Paste the graphics concerned into Irfanview and drag your mouse between the two points you want to measure.  You'll get a measurement in pixels appearing in the title bar.

You can use that to measure the width and height of the PCB and also to measure the distance between two holes that you know the actual measurement of (I think this is where the microcontroller is).

So you'll have

Microcontroller hole width in pixels/Microcontroller hole actual width = PCB width in pixels/PCB actual width

You should know the first three and you can then solve for the fourth.
0

Featured Post

MIM Survival Guide for Service Desk Managers

Major incidents can send mastered service desk processes into disorder. Systems and tools produce the data needed to resolve these incidents, but your challenge is getting that information to the right people fast. Check out the Survival Guide and begin bringing order to chaos.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Digital marketing agencies have encountered both the opportunities and difficulties that emerge from working with a wide-ranging organizations.
Invest in your employees with these five simple steps to improve employee engagement and retention.
Video by: Tony
This video teaches viewers how to export a project from Adobe Premiere Pro and the various file types involved.
XMind Plus helps organize all details/aspects of any project from large to small in an orderly and concise manner. If you are working on a complex project, use this micro tutorial to show you how to make a basic flow chart. The software is free when…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question