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QR_STENCILER

★ 67 Open GitHub ↗

QR Code Stenciler, built in Processing 1.5.1+

// repository documentation

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```
  ___  ___   ___ _____ ___ _  _  ___ ___ _    ___ ___
 / _ \| _ \ / __|_   _| __| \| |/ __|_ _| |  | __| _ \
| (_) |   / \__ \ | | | _|| .` | (__ | || |__| _||   /
 \__\_\_|_\ |___/ |_| |___|_|\_|\___|___|____|___|_|_\
```

By Golan Levin and Asa Foster III for FFFFF.AT, 2011-2025

---
                                                   
# QR_STENCILER

```                               
Version: 19 September, 2025                        
https://github.com/golanlevin/QR_STENCILER         
http://fffff.at/qr-stenciler-and-qr-hobo-codes/    
By Golan Levin and Asa Foster III for FFFFF.AT     
Developed with Processing, a free, cross-platform  
Java programming toolkit for the arts.             
```
                                      
## ABOUT

```                               
This free program loads a user-specified QR code   
image, from which it generates a topologically     
correct stencil PDF, suitable for laser-cutting.   
```
                                                
## COMPATIBILITY

```                                   
QR_STENCILER has been tested in MacOSX 15.6   
and works with Processing v.3.5.4 and 4.4.7.    
```

## INSTRUCTIONS

```                                     
1. Make a QR code image which embeds a brief text. 
2. Download and install 'Processing' from          
   http://www.processing.org/download              
3. Unzip 'QR_STENCILER.zip' to a folder.           
4. Put your QR code image in 'QR_STENCILER/data/'  
5. Launch Processing and open 'QR_STENCILER.pde'   
6. Press 'Run' (Command-R) to start the stenciler. 
7. You will be prompted to Open your QR code image.
   A default will be opened if none is provided.   
8. After doing so, the program will generate a     
   stencil PDF in the 'data' folder.               
9. That PDF can now be opened in your favorite CAD 
   software, for laser-cutting cardboard, etc.     
10. After marking your stencil, test it with a QR  
   reader, such as your iPhone camera app.         
```
                                                   
## LICENSE   
                                         
```
QR_STENCILER shall be used for Good, not Evil.     
It is licensed under a Creative Commons            
Attribution-NonCommercial-ShareAlike 3.0 Unported  
License (by-nc-sa 3.0), as described at            
http://creativecommons.org/licenses/by-nc-sa/3.0/  
You are free to distribute, remix, and modify      
QR_STENCILER, so long as you share alike and       
provide attribution to FFFFF.AT. The repackaging   
of QR_STENCILER as or into commercial software, is 
expressly prohibited. Please note that QR_STENCILER
also enjoys protections under the GRL Repercussions
3.0 license, http://bit.ly/cc-repercussions.       
The 100 QR_HOBO_CODES and their respective stencils
are hereby dedicated to the public domain.         
```
                                                
## WARRANTY

```                                       
This software is provided AS IS, without warranty  
of any kind, expressed or implied, including but   
not limited to the warranties of merchantibility,  
fitness for a particular purpose, and noninfringe-
ment. In no event shall the authors be liable for  
any claim, damages or other liability, whether in  
an action of contract, tort or otherwise, arising  
from, out of or in connection with this software   
or its use.                                        
```
                                                
## ACKNOWLEDGEMENTS

```                               
The QR_STENCILER software was created by Golan Levin    
and Asa Foster III with support from the STUDIO for    
Creative Inquiry and the School of Art at          
Carnegie Mellon University. Thanks to Ben Fry,     
Marcus Beausang, Neil Brown & Judy Robertson for   
great code. A tip of the hat to Fred Trotter,      
Jovino, le Suedois, Patrick Donnelly and others    
who have gone down similar paths. Additional       
thanks to Andrea Boykowycz for creative input.     
Some of the QR Hobo Codes are inspired by:         
http://www.worldpath.net/~minstrel/hobosign.htm    
http://cockeyed.com/archive/hobo/modern_hobo.html  
http://en.wikipedia.org/wiki/Warchalking           
QR code' is trademarked by Denso Wave, Inc.        
```
                                                
## CONTACT

```
Inquiries about QR_STENCILER may be directed to:   
Golan Levin <golanlevin@gmail.com>              
```

QR_STENCILER

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