Integrates two projects for one nice functional output of a slowmovie. Built for the 10.3 inch screen from WaveShare https://www.waveshare.com/wiki/10.3inch_e-Paper_HAT_(D)
IT8951 (https://github.com/GregDMeyer/IT8951)
This Python 3 module implements a driver for the IT8951 e-paper controller, via SPI. The driver was developed using the 6-inch e-Paper HAT from Waveshare. It hopefully will work for other (related) hardware too.
To install, clone the repository, enter the directory and run
pip install -r requirements.txt
pip install ./
Make sure that SPI is enabled in raspi-config. For some examples of usage, take a look at the integration tests.
You should try setting different VCOM values and seeing how that affects the performance of your display. Every one is different. There might be a suggested VCOM value marked on the cable of your display.
You might be able to squeeze some extra performance out of the data transfer by increasing the SPI
clock frequency. The SPI frequency for transferring pixel data is by default set at 24 MHz, which is the maximum
stated in the IT8951 chip spec here
(page 41). But, you could try setting higher and seeing if it works anyway. It is set by passing the spi_hz argument to the Display or EPD classes (see example in tests/integration/tests.py).
For this version the backend was rewritten, so that the SPI communication happens directly
by communicating with the Linux kernel through /dev/spidev*. This means:
sudono longer required- requires neither the
bcm2835C library nor thespidevPython module - data transfer is way faster than before!
If you modify spi.pyx, make sure to set the USE_CYTHON environment variable before building---otherwise your
changes will not be compiled into spi.c.
SlowMovie (https://github.com/TomWhitwell/SlowMovie)
Full writeup of this project here:
https://medium.com/@tomwhitwell/how-to-build-a-very-slow-movie-player-in-2020-c5745052e4e4
Bryan's original post here:
https://medium.com/s/story/very-slow-movie-player-499f76c48b62