How does qrcodechimp.com create the design around QR codes to make them circular?
https://share.vidyard.com/watch/sTGmPh8bjsRZkYB12pSdCs?
thank you
I haven't tried anything except for using their default QR code generator. I would like to use mine instead and realise it's just design.
thanks
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I am trying to create a circular QR Code. I understand that the typical circular codes require customer readers (Facebook, Kik, TikTok, ShotCode, etc.), but I would like this code to be able to be read by standard devices (ex.: the built-in reader in iOS devices).
I have looked at a stack of reference materials, including:
How can I generate a circular qr-code like a messenger or a kik code?
Generate circular qr-code like a messenger or a kik code using Python
Generate QR codes missing the corner
I've also dug into the (really in-depth) tutorial at thonky.com, and tried to create my own:
From what I can tell, I've kept the finder patterns, the alignment pattern, the timing patterns, the separators, and the dark module intact (see details here). But still no love when I try to read it.
Admittedly, I've taken an existing code (it contains the URL 'https://www.stackoverflow.com') and just chopped off the corners to make it fit. So my assumption is that I've damaged the code enough that the error correction isn't working.
But, would this work at all anyway? If I figured out how to encode it correctly, would it work without the corners? Or is this a useless endeavor to start with?
There is a basic structure for QR codes with specific elements that take part in the decoding process. Some of them are the alignment, the timing pattern, and the finder pattern. One of the elements which seems to be missing is the quiet zone. It's used to separate the code from other objects and surrounds all the data including structuring elements in the code. Have a look on the outer side of codes here and notice the difference. Also, if you look at the points that represent your data cells, some of them partially exist. In other words, some half and quarter circles exist and others are unknown behind the outer frame of your code design. How would it be figured out if it's black or white to be used for decoding? This is the problem. Please check this image to see how data look missing when you crop it with the circle.
Also, if you use any regular QR coder reading application, you will notice that circular QR codes require custom readers. So, the answer to your question is yes. The corners are necessary if you don't use a custom reader and if data exists on them.
If you are interested in academic research details, see this. I hope my answer helps you. :)
Do any of you know what to call these codes? My best guess is custom QR codes. Facebook (messenger) and Snapchat has their own QR codes and I want to look into how to create these - well my own of course!
Does anyone here have anything I could research? A mane? Some documentation or just something?
Have a wonderful day!
Those QR codes are either using the "Frame QR" format or taking advantage the error correction bits to recover the damage done by placing a logo in the middle of the barcode. QR codes have 4 levels of error correction that can be added to the code to allow a partially damaged barcode to still be readable.
For more information: https://www.qrcode.com/en/codes/
Does anyone know how to generate an 11x11 module QR-code? Alternatively, it could also be a 13x13 code, but preferably 11x11.
I know the codes exist, but I can't figure out how to go about generating my own.
The code doesn't have to store much information. It would be nice with a tiny image, but it wouldn't need more than a simple text message.
I have used online code generators in the past, but most of them requires a paid subscription to customize and make codes, and as my project isn't sponsored, I don't have the budget to pay for the code.
Thanks in advance for all answers
I have a question in my textbook which says to write an arduino code by means of which an IRSensor can be used to identify black and white colors. I have searched everywhere on the net and have not found a solution. Can someone help me in this code?
Thanks
I found these links in my first google search:
- http://forum.arduino.cc/index.php?topic=143767.0
- http://www.instructables.com/id/Multi-Function-Automatic-Move-Smart-Car-for-Arduin/step11/Black-or-white-line-detection-principle/
These should help you get started in thinking about how to code for this but also leaves room for you to think about the right answer on your own. If you need help with the actual coding part, edit your question with your code and whatever errors you are having trouble with.
I am planning to explore on QR code generation . I saw the google api http://chart.apis.google.com/chart?cht=qr&chs=75x75&chl=test and its pretty impressive. But it works only for URL's and small data's. So i am thinking about writing a .net app to generate the QR code. So any information on libraries to start with ,will be helpful.
Thanks,
It does not just work for URLs. You can put whatever text you want as an argument (just URL-encode it correctly). It also works for any data size that QR codes can support.