Order of numbers and characters in barcode seem wrong when scanned back in

[j...@dicesaloon.com]

Hi, 

First off, thank you for creating this software, I am new to barcodes and barby. I have found it easy to set up and output a png file. But when using a handheld scanner to read printed out barcodes back into the computer they have all the right characters but in the wrong order.

I have tried with both CODE128 & CODE39 with the same result. 

Here are some input strings, and the corresponding strings that are scanned back in

JIM-TEST  -> IJM-ESTT

U12345678901 -> U12345617890

U621408440 -> U124680440

Do you have any idea why they would read back in reordered like this? 

Tanks in advance

Jim

[j...@dicesaloon.com]

    def self.generate_code_128B(barcode_seed)

      file_name = "barcode-code128b-#{barcode_seed}.png"

      file_local_url = @@BARCODE_FOLDER + file_name

      file_web_url = @@BARCODE_FOLDER_URL + file_name

      FileUtils::mkdir_p @@BARCODE_FOLDER

      if !File.exist?(file_local_url)

        barcode = Barby::Code128B.new(barcode_seed)

        File.open(file_local_url, 'w'){|f|

          f.write barcode.to_png(:height => 40, :margin => 5)

        }

      end

      return file_web_url

    end

This is the function i used to write the pdf

[Tore Darell]

The images you provided are read just fine at http://zxing.org/w/decode.jspx

How are you printing the barcodes? Are you printing the PNGs, creating
PDFs first?

> --
> You received this message because you are subscribed to the Google Groups
> "Barby" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to ruby-barby+...@googlegroups.com.
> To post to this group, send email to ruby-...@googlegroups.com.
> Visit this group at http://groups.google.com/group/ruby-barby.
> For more options, visit https://groups.google.com/d/optout.

[j...@dicesaloon.com]

Thanks so much for your quick reply. You are right, they do read in fine on that website. I am creating the pngs, writing them to disk, opening in photoshop and printing out. I am using this handheld scanner http://www.amazon.co.uk/gp/product/B00NIOEA1K?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00 I am using OSX and just trying to scan back in the barcodes into a text editor. Im now wondering if it might be the scanner, and what keyboard layout it is recognised as. Do you happen to know if barcode scanners like this one use a standard keyboard layout?

Cheers

Jim

On Saturday, August 15, 2015 at 7:50:15 PM UTC+1, j...@dicesaloon.com wrote:

[Tore Darell]

TBH, I have no idea. Try playing with some output options like xdim and unbleed

[Beaumont Loewenthal]

Hey Jim,

Did you solve this in the end? I'm having the same problem with a similar scanner.

Thanks.