• copy the proxy python script from the folder vit_dotmatrix/static/py-printer-linux.zip to you local computer
• for demo purpose, you can download it from here
• unzip into any folder on your local client computer where the printer is connected
• install the required Python modules: flask and flask-cors, you can use pip install -r requirements.txt command
• follow the INSTALL.TXT instruction on how to install and run the script
• you can then print Invoice, SO, PO directly to local dotmatrix printer

• copy the proxy python script from the folder vit_dotmatrix/static/py-printer-win.zip to you local computer
• for demo purpose, you can download it from here
• unzip into any folder on your local computer where the printer is connected
• install python on your windows computer by downloading the executable from http://python.org
• install the required Python modules: flask and flask-cors, you can use pip install -r requirements.txt command
• install py32win from https://github.com/mhammond/pywin32/releases
• you can then print Invoice, SO, PO directly to local dotmatrix printer

Edit the file /py-printer-win/printer.py. At line 1: change PRINTER_NAME value to the exact printer name detected on your local computer. You can find this name from Windows Printer Device Manager control panel.

For Linux/Mac/Raspi it uses the default printer as assinged by the LPR printer system.