xseignard/thermalPrinter

# Control the Adafruit/Sparkfun thermal printer from node.js

[![npm](https://img.shields.io/npm/v/thermalprinter.svg?style=flat-square)](https://www.npmjs.com/package/thermalprinter) [![Travis](https://img.shields.io/travis/xseignard/thermalPrinter.svg?style=flat-square)](https://travis-ci.org/xseignard/thermalPrinter) [![Code Climate](https://img.shields.io/codeclimate/coverage/github/xseignard/thermalPrinter.svg?style=flat-square)](https://codeclimate.com/github/xseignard/thermalPrinter/coverage)

Largely inspired by http://electronicfields.wordpress.com/2011/09/29/thermal-printer-dot-net/

You can print images, but they need to be 384px wide.

It's a fluent API, so you can chain functions, but don't forget to call `print` at the end to actually print something!

## Crappy schematics

You'll need an USB/Serial converter.

![schematics](/images/schema.png)


## Usage
- install with `npm install thermalprinter --save` 
- check the demo sample:

```js
var SerialPort = require('serialport'),
    serialPort = new SerialPort('/dev/ttyUSB0', {
        baudRate: 19200
    }),
    Printer = require('thermalprinter');

var path = __dirname + '/images/nodebot.png';

serialPort.on('open',function() {
    var printer = new Printer(serialPort);
    printer.on('ready', function() {
        printer
            .indent(10)
            .horizontalLine(16)
            .bold(true)
            .indent(10)
            .printLine('first line')
            .bold(false)
            .inverse(true)
            .big(true)
            .right()
            .printLine('second line')
            .printImage(path)
            .print(function() {
                console.log('done');
                process.exit();
            });
    });
});
```

## Demo

![demo](/images/demo.gif)