Printing QR codes with the adafruit thermal pritner
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Printing QR codes with the adafruit thermal pritner

by Grintor on Sun Dec 15, 2013 11:01 pm

I was excited when I saw that the arduino tutorial on the adafruit thermal printer page mentioned printing QR codes. I was disappointed when I read it and found that the tutorial wasn't generating QR codes and printing, just printing stored QR codes that were generated pre-compile. I looked all over the interwebs for a way to generate and print a QR code from Arduino to this thermal printer, but had very little luck. I ended up figuring out a way, and I wrote a library for it. I have never written a library before, so it's a bit messy, but it's functional. I thought I would post it here in case anyone else was looking for a way: https://github.com/grintor/QRprint
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Re: Printing QR codes with the adafruit thermal pritner

by adafruit on Mon Dec 16, 2013 11:13 am

Nice, thanks!

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Re: Printing QR codes with the adafruit thermal pritner

by tz1 on Mon Dec 16, 2013 10:29 pm

I'm glad someone is using my qrduino. Good port.

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Re: Printing QR codes with the adafruit thermal pritner

by privera on Tue Jun 16, 2015 3:49 am

Hi Grintor! Thanks for your library. Im trying to use it, but running the example instead of qrcode I am having a block of chinese characters. Thermal library and the printer is working ok. The baudrate is ok too. the model of the printer is: https://ebc81.files.wordpress.com/2014/08/701print-driver-board.pdf

Any help? Thanks in advance!

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Please be positive and constructive with your questions and comments.