ROS Resources: Documentation | Support | Discussion Forum | Service Status | Q&A answers.ros.org
Ask Your Question
5

How do you make calibration boards?

asked 2011-03-03 15:20:40 -0500

Homer Manalo gravatar image

The recommended(8x6) calibration board is so big they won't print on a normal printer. How do you make yours? I'm using a white illustration board then pasting cut-outs of black art papers. In the long run they tend to be curved and my cuts are not that precise which is not ideal in calibration. I'm looking for a better way to have a longer lasting calibration board.

edit retag flag offensive close merge delete

4 Answers

Sort by ยป oldest newest most voted
6

answered 2011-03-03 16:19:03 -0500

A quick solution: Buy a large poster board sheet (something like this). Then print your checkerboard on A4 (or letter) sized paper. It will get cut across several (usually 4) sheets. The squares along the edges will get cut in the middle, and you can use that to align the 4 pieces properly. Glue the sheets to the cardboard, making sure the edges are aligned.

A better solution: use an aluminum dibond plate and get it custom printed. The details are discussed in this thread.

edit flag offensive delete link more
2

answered 2018-05-23 03:34:09 -0500

calib.io gravatar image

We had the exact same problem in our lab back when I was a student, so a few of us started calib.io

There, you can quickly generate a PDF calibration pattern here, for prototyping, printing yourself locally or buy through us where we guarantee high quality boards.

edit flag offensive delete link more
3

answered 2012-12-06 03:47:11 -0500

Thomas D gravatar image

I have had good results with using aluminum dibond with a calibration pattern glued on. I go to 858 Graphics (that link has pricing information, which is very reasonable for small boards) and just send them a PDF file with the calibration pattern. There are likely similar shops wherever you happen to live.

This is a Python script I use to generate the PDF files I send to them. That script requires you to fiddle with the text placement a bit, but I've found it convenient to have the pattern details printed on the board so you don't forget the sizes a year from now.

edit flag offensive delete link more
1

answered 2011-03-03 15:38:25 -0500

Prasad gravatar image

We took a cardboard sheets attached together, cut pieces of black and white blocks as per size 108 mm. and to make it straight and stable we attached ply wood around the cardboard from back side. I am sure there are good ways to do this but this process worked for us.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

3 followers

Stats

Asked: 2011-03-03 15:20:40 -0500

Seen: 2,949 times

Last updated: Dec 06 '12