Balloon Client for Receipts Printer

Install

apt update
apt install php php-curl composer
composer install

Running

Add credentials for API to ~/.netrc like default login admin password adm1n.

Run the script like:

php main.php http://localhost/domjudge

Testing

You can test if your ticket printer works by echo "Hello World" > /dev/usb/lp0, if it works then it will print Hello World on the ticket printer.