QR crocnet bomb

How to make a QR crochet bomb

You will need

  • DK weight wool yarn with gauge 20-22sts/10cm(4”) (eg. Sandnes Smart Superwash). This is a perfect chance to use leftover yarns.
  • Crochet hook 4mm (or size to obtain gauge)
  • Tapestry needle

1. Create the QR code pattern

Turn your website address into a QR code using a code generator, for example Kaywa QR code.

Save the generated QR code image and open it in your image editing application (for example PhotoShop). Scale the image size down to 31x31px. Make sure that the image stays black and white – if shades of grey appear in the scaling process, you may have to do some color replacing. Save the image as png.

Use knitPro web app to turn your QR code into a crochet pattern. Upload your image there and it produces you a graph where 1px = 1 stitch. You will get a 31×31 stitch grid.

2. Crochet the piece

1 horizontal stitch in the pattern is 2 dc in the crochet. 1 vertical stitch in the pattern is 1 row of dc in the crochet. There is 64 dc in the work altogether (62 in the pattern and 1 in each edge for turning).

Chain 66. 1 dc into 3rd ch from the hook, continue to the end of the row (3ch + 63dc altogether). Turn the work. 3 ch (the first dc of the row is always 3 ch), continue with dc.

Crochet the piece using any colors you like. Note that in order to create a working QR code you have to keep the contrast between the foreground and the background colors relatively high. Read more instructions in the ShareSquare article How not to screw up your QR code part 1: contrast – they have found out that the contrast ratio has to be at least 4:1. You can count the ratio between any two colors using Juicy Studio’s Contrast ratio calculator.

3. Assembly

Weave in yarn ends. Block the piece: smooth it a bit until it is in a square shape and pin it onto a surface that can handle moist (for example a thick towel). Moisten the piece with cold water using a spraying bottle and leave to dry.

*

Creative Commons Licence

Posted on by Anu | This entry was posted in patterns and tagged , , . Bookmark the permalink.

12 comments to How to make a QR crochet bomb

  1. Pingback: How to make a QR crochet bomb by Anu Koski | KnitHacker

  2. BearyAnn says:

    I have been wanting to do do this. I love the article and direction.
    Question, how important is it to use wool? Would acrylics work or is there something about the wool that finishes the project off to work best?

  3. Brilliant – I’ll definitely give it a go – thanks for the info!

  4. Anu says:

    BearyAnn, I used wool because I just happened to have a huge pile of leftover wool yarn in my closet. I guess any material will work, the most important thing in creating a working QR code is that there is enough contrast between the foreground and background colors.

  5. Hi, are you using american or Uk crochet terminology. The picture looks like Trebles (UK) which is the equivalent of DC (US)?

  6. Anu says:

    I have tried to use UK terminology as consistently as I can (there may be some errors in my patterns because I have translated them from Finnish).

    So in this pattern I have used this stitch (this is the UK DC stitch, right?):
    http://crochet.about.com/library/bldoublecrochet.htm

  7. Hi Anu, no, it’s UK treble stitch, which is what I used and it came out right. Uk DC is like US SC. thanks so much for the pattern insructions – I’m thrilled to bits that it works!

  8. I constantly splent mƴ hlf aɑn hour tօ read tɦis webpage’s content everyday ɑlong with ɑ ccup of coffee.

    my webpage … free full tv episodes

  9. Search Engine Optimization is influenced by many things but essentially you get the most of
    traffic via keyword searches. With a lot of SEO Companies out there, it’s no excuse to tell that you have no choice or that there is none
    that fit your needs. Without the use of this specialized
    search your page may go lost on the internet with so many other
    companies to compete with.

    My homepage professional seo services agency

  10. WOW just what I was looking for. Came here by searching
    for weddingwire revenue

  11. Shasta says:

    Can I simply say what a relief to find an individual who genuinely understands what
    they’re talking about online. You certainly understand how to bring
    a problem to light and make it important. More and more people
    need to look at this and understand this side of the story.
    I was surprised that you are not more popular given that you surely possess the gift.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>