zero-weather-station

Warn: Code generted wtih use of copilot (yeah, i'm lazy to do basic stuff...)

How to docker

Project consist of multiple parts that plyat together.

docker run --rm -it -v ${PWD}:/mnt/app  -w "/mnt/app/" python:latest bash

Setup

To install&setup all parts run install.sh script first. This will create virtaual python eviroment. Make sure that submodules were downloaded in external folder. Ther should be these ones:

• IT8951
• weather-icon
• nameday-api

bash install.sh

Waveshare 7.8" HD e-ink make-it-run steps for zero 2W

This should work on other devices too.

1. enable SPI in sudo raspi-config no other addition to /boot/config.txt
2. Download as local module https://github.com/GregDMeyer/IT8951 and run setup
3. check if all libraries in python has needed version and install other needed libraries
4. set vcom value. for 7.8" HD is value -1.56 (-1.80 works better)
5. try running following test script until it runs (tested and it runs on bulleye lite)
6. script with SPI may need authorization to ise SPI, so run it with sudo or add SPI group

from IT8951.interface import EPD
from IT8951.display import AutoEPDDisplay
from IT8951 import constants

import numpy as np
from PIL import Image, ImageDraw

# Nastavenie rozlíšenia pre 7.8": 1872 × 1404
# WIDTH = 1872
# HEIGHT = 1404 

display = AutoEPDDisplay(vcom=-1.56, spi_hz=24000000) 

img_path = '<PUT HERE ANY IMAGE to show on display>'
print('Displaying "{}"...'.format(img_path))

# clearing image to white
display.frame_buf.paste(0xFF, box=(0, 0, display.width, display.height))

img = Image.open(img_path)

# TODO: this should be built-in
dims = (display.width, display.height)

img.thumbnail(dims)
paste_coords = [dims[i] - img.size[i] for i in (0,1)]  # align image with bottom of display
display.frame_buf.paste(img, paste_coords)

display.draw_full(constants.DisplayModes.GC16)

How to run it?

Just run fetch-weather.py (get weather data before first creen render) and render-screen.py with env in cron every minute or so like this:

*/30 * * * * cd /home/THE-USER/zero-weather-station &&  .venv/bin/python fetch-weather.py

* * * * * cd /home/THE-USER/zero-weather-station &&  .venv/bin/python

0 0 * * * cd /home/THE-USER/zero-weather-station &&  .venv/bin/python reset_epaper.py