Printing an ASCII art scroll using a receipt printer. A collaboration between Seaweed Factory and Johnathan Cook.
Some test prints.
I've decided to release the software used in this project. It's a graphical application written in Java and a sketch for the arduino uno. It's currently untested as the printer is in transit to Glasgow; some corrections may follow. It was tested under Windows and will soon be tested in OSX. You can find a preview here (choose download in the file menu):
ScrollPrint v1.1 uses a thermal printer and arduino uno to print scrolls from a text file. Each line of the text file should contain 32 characters, no blank lines allowed. Save the file with no formatting; use the MSDOS text format option if available. An example text file is included.
This program requires RXTX binaries to be installed. See the following for installation instructions:
A graphical interface is available by running the ScrollPrint.jar file. From the command line run the following:
java -jar ScrollPrint.jar
The source for this application is included in the src folder. The project was written using Netbeans 7.1.
The sketch labeled scrollPrint.ino must be downloaded to the arduino uno. This sketch relies upon the Thermal Printer Library from adafruit. The interface circuit and library can be found at adafruit:
If printing ASCII art, try the following converters. It helps to squish the long axis of anything you are printing by about 75 percent due to line spacing.
http://picascii.com/: Feed it images 96 pixels wide to get 32 characters back.
http://www.text-image.com/convert/ascii.html: Set character width to 32, extra contrast helps.
Send any questions or comments to email@example.com