https://github.com/ayoy/micropython-thermal-printer

The MicroPython port of Python Thermal Printer by Adafruit
https://github.com/ayoy/micropython-thermal-printer

adafruit micropython printer pycom thermal-printer

Last synced: 2 months ago
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The MicroPython port of Python Thermal Printer by Adafruit

• Host: GitHub
• URL: https://github.com/ayoy/micropython-thermal-printer
• Owner: ayoy
• Created: 2017-12-08T22:50:55.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2017-12-26T19:39:24.000Z (over 6 years ago)
• Last Synced: 2024-01-28T08:10:32.090Z (5 months ago)
• Topics: adafruit, micropython, printer, pycom, thermal-printer
• Language: Python
• Homepage: http://kapusta.cc
• Size: 66.4 KB
• Stars: 20
• Watchers: 7
• Forks: 5
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md

Lists

• awesome-micropython - micropython-thermal-printer - The MicroPython port of Python Thermal Printer by Adafruit. (Libraries / Display)

README

        
# MicroPython Thermal Printer

This is the MicroPython port of Python Thermal Printer by Adafruit, available [elsewhere on GitHub](https://github.com/adafruit/Python-Thermal-Printer).

Read the full story at https://kapusta.cc/2017/12/11/thermal-printer-library-for-micropython/.

## The summary of changes

1. Removed Python 2.x code

1. Removed `writeToStdout()`

1. Replaced `Serial` with `machine.UART`

1. Removed support for pre-2.68 firmware

1. Removed image printing method, because it depended on Python Imaging Library

1. Disabled calls to `wake()` and `reset()` at initialization

1. Fixes to `sleepAfter()` and `wake()`

## Additions

* `printBitmapFromFile()` - allows for printing the bitmap from file on disk, instead of reading it from array of bytes like `printBitmap()` does.

* `printBMPImage()` - allows for printing the actual .bmp image. Supports 1-bit Windows BMP format only, up to 384px wide.

* heat dots, heat time and heat interval settings are parametrized in the initializer to fine tune printer output.

## Usage

See [printertest.py]( https://github.com/ayoy/micropython-thermal-printer/blob/master/printertest.py) for usage example.

## Testing

So far I tested it only with LoPy version 1. Works fine, besides printing large bitmaps that required too much memory for the LoPy (for the bitmap provided with printertest.py) - hence `printBitmapFromFile()`.