This is an Arduino library for a POS(point of sale) Printer. This library is testet on a samsung SRP-350G printer. These printers use TTL serial to communicate, 2 pins are required. But can have rs-232 or other cards in the back, that convert othersignals to ttl, so you might need a soldering iron to add 2-3 wires.
On your Mac:: In (home directory)/Documents/Arduino/Libraries On your PC:: My Documents\Arduino\libraries On your Linux box: (home directory)/sketchbook/libraries
Written by Anders Vesterga ard, with contributions from the open source community. Originally based on adafruit thermal printer library https://github.com/adafruit/Adafruit-Thermal-Printer-Library MIT license, all text above must be included in any redistribution.
If you don't need to print danish characters like "æøåÆØÅ" then you should comment the line in POS_printer.cpp that defines DENMARK
I have a danish wiki page for the project on the local hackerspace's wiki http://wiki.hal9k.dk/projects/posprinter