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Scroll pHAT HD Driver

Project description

Scroll pHAT HD https://shop.pimoroni.com/products/scroll-phat-hd

17x7 pixels of single-colour, brightness-controlled, message scrolling goodness!

Installing

Manual install:

Library install for Python 3:

on Raspbian:

sudo apt-get install python3-scrollphathd

other environments:

sudo pip3 install scrollphathd

Library install for Python 2:

on Raspbian:

sudo apt-get install python-scrollphathd

other environments:

sudo pip2 install scrollphathd

Development:

If you want to contribute, or like living on the edge of your seat by having the latest code, you should clone this repository, cd to the library directory, and run:

sudo python3 setup.py install

(or sudo python setup.py install whichever your primary Python environment may be)

In all cases you will have to enable the i2c bus.

Documentation & Support

Unofficial / Third-party libraries

1.3.0

  • Improvement: Default i2c library is now smbus2

  • Improvement: Significant restructure of library around generic is31fl3731 driver

  • Improvement: Allow for alternate i2c addresses

  • BugFix: Add missing get_buffer_shape

  • BugFix: Fix malformed chars in font5x7

  • New: Fonts, fonts, fonts, and a set_font method to use them

1.2.1

  • New: Exposed set_gamma method for user gamma correction

  • Improvement: Removed web API import to prevent hard dependency on Flask

  • Improvement: Many improvements to the HTTP API including autoscroll

  • Optimisation: write_string will calculate string size and grow buffer once to fit

  • Optimisation: set_graph will grow buffer to fit the graph

  • Bugfix: Fixed ASCII font to place accented characters at correct codepoints

1.2.0

  • New: Added set_font to set current font for all write_string calls

  • New: Added before_display argument to show to modify the display buffer

1.1.1

  • Bugfix: Removed Flask HTTP API entry_point to prevent bin file conflict between Python 2 and 3

1.1.0

  • New: Added Flask HTTP API

  • New: Init is deferred until the library is used

1.0.1

  • New: Added gamma correction

1.0.0

  • New: Added set_brightness to globally set maximum display brightness

  • New: Added get_buffer_shape to return internal buffer shape

  • New: Added get_shape to return display shape

  • New: Added set_clear_on_exit, pass True/False to set/clear

  • Improvement: draw_char no longer fills black pixels, which was incongruent with letter spacing

  • Improvement: ‘1’ in font3x5 is now 3 pixels wide

  • Improvement: Monospacing option for fonts

  • Improvement: Fonts can now be indexed by char in addition to ordinal

  • Improvement: Clear now resets scroll position

  • Improvement: Fill now grows buffer and fills in single operations

  • Improvement: scroll(0,0) no longer enforces a default scroll

  • Improvement: width/height now private, reimplemented as read-only properties

  • Improvement: initialization now detects disabled i2c or missing pHAT and emits a friendly error

  • Improvement: cleared display sooner to mitigate flash of lit pixels on startup

  • Bugfix: Corrected default scroll direction

  • Bugfix: 90 and 270 degree rotations are no longer cropped to 7 pixels wide

  • Bugfix: Fixed missing version_info

  • Bugfix: Graph catches IndexError and gracefully ignores missing values

0.0.1

  • Initial release

Project details


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