tresf

// From https://github.com/WebBluetoothCG/demos/blob/gh-pages/bluetooth-printer/index.html
var SERVICE = '000018f0-0000-1000-8000-00805f9b34fb';
var WRITE = '00002af1-0000-1000-8000-00805f9b34fb';

var DATA = ''
    + '\x1B' + '\x61' + '\x31'                                              // center align
    + '\x1D' + '\x21' + '\x11' + 'Hello\nBluetooth!\n\n'                    // double font size
    + '\x1D' + '\x21' + '\x00' + '... from your friends\nat https://qz.io'  // normal font size
    + '\n\n\n\n\n\n\n';                                                     // feed paper

Surendrajat

First Things First

• Enable PPA

   sudo apt update
   sudo apt install software-properties-common apt-transport-https curl

• Install apt-fast [Yes! it's really fast]