"spe" stands for "seven point eight", corresponding to the e-ink screen size.

7.8-inch e-paper display control.

I bought my screen on AliExpress.

It relies on the IT8951 Hat to connect to Raspberry Pi.

• 7.8 inch e-Paper datasheet: https://www.waveshare.com/w/upload/b/b4/7.8inch_e-Paper_Specification.pdf
• Adapter schematic: https://www.waveshare.com/wiki/File:7.8-10.3inch-e-Paper-Adapter-Schematic.pdf

For more, read the "Datasheet" folder.

Link: 7.8inch e-Paper HAT

Please install the driver according to the wiki (Deprecated. Please use the below driver instead).

The driver in the wiki about is C-based, meaning that you need to develop your code with C. We can switch to a python-based driver.

The principle is the same: control the SPI port of Raspberry Pi to send the data to the IT8951 chip on the hat.

I recommand this: https://github.com/GregDMeyer/IT8951

To verify, run .test/integration/test.py. This is even faster than the C-based driver (bcm2835) in the wiki.

Now you can develop your code with python.

The configuration is stored in config.json. It contains personal data so please update the fields accordingly in config_example.json. Then rename it to conig.json.

This app displays a random Instagram image from a given user.

At this stage, the photos need to be stored in local. In the future, I may add the pipeline to fetch new photos from Instagram.

Please set the folder name in config.json. If your photo is in /home/your_name/instagram/my_ins_id/, then the field instagram_photo_dir should be set to instagram/my_ins_id/.