4.6 KiB
Little Prynter
Print out shit from the cloud on a thermal paper.
About
This project started when I got a Thermal Printer from a friend. It's now evolved to a complete web solution to print out text and images.
Requirements
To make this project work, you will need :
- A Thermal Printer :
- I used Adafruit's thermal printer at first, but it broke down. You can get it here.
- I then used an EPSON TM-T2OIII. It's expensive, but it's also high quality, and has better CUPS and specific library support.
- A Raspberry Pi or any computer with USB or Serial.
- Some electric wires.
- Some knowledge of the command line,
- Some knowledge of Python.
- 3h of your time, 5h if things need debugging.
git,virtualenv,pipandpython>= 3.8.6.- A webcam for the webcam page to work. Will work on a smartphone. Not required.
Context
For the EPSON TM-T20III, you can get the CUPS driver from here. It's not specific to the printer I've been using, so you can try with other printers.
With that, you can try out your printer and print normal text, images or pdf documents for example. LittlePrynter itself does not require any other software than the ones installed with it, i.e the ones listed in the requirements.txt file.
For the Adafruit printer, start by following the guide here to install the CUPS software needed to print images. If you want, you can install it via the command line, following this guide.
You can also get some information from here and here if you're stuck.
The version for the EPSON TM-T20III uses a library called python-escpos, which doesn't need a CUPS driver or anything else. It's included in the Python dependencies.
The project only supports the EPSON printer, but you can try to adapt it for other printers using the adafruit-thermal branch, but I won't offer support for it.
Install & setup the project :
$ git clone https://git.n07070.xyz/n07070/LittlePrynter
$ virtualenv LittlePrynter
$ cd LittlePrynter
$ source bin/activate
$ pip install -r requirements.txt
tip : when you're done, you can get out of the virtualenv either by closing your terminal, or by running
deactivate.
You should see a folder named configuration. Enter it, and duplicate the file named config.toml.sample, and rename the copy to config.toml. Now, edit this file by following the comments in the file itself.
You can now start the web server with
$ export FLASK_APP=src/main.py
$ flask run
This command should start a web server with which you can test your configuration. If you plan on exposing your printer to the Internet, and give it an IP / URL, please, please, please, don't run it this way. Look at Flask's documentation and read about running a production server. It's a little more work, but it will prevent your computer/server being hacked in too easily.
Voilà !
More
If you liked this project, feel free to support my work !
Links
- A blog post about some CUPS configuration
- Github repo with CUPS drivers for the Adafruit Thermal Printer ( zj-58 )
- A link to buy one in Europe
- Another link to buy one, direct from factory
Licence
LittlePrynter
Copyright (C) 2020 N07070
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.