ePaper Pi for Home Assistant

A HomeAssistant-connected Raspberry Pi showing useful information on an e-paper display.

Hardware Setup

Parts List:

• Adafruit 2.13" Monochrome E-Ink Bonnet for Raspberry Pi
• Raspberry Pi Zero W
• SD card
• Power supply

Installation

1. Prepare the Raspberry Pi Zero:

• Download and flash Raspberry Pi OS Lite onto your SD card

1. TODO

https://learn.adafruit.com/2-13-in-e-ink-bonnet/usage pip install python-dotenv sudo apt-get update sudo apt-get -y upgrade sudo apt-get install -y python3-pip sudo apt install --upgrade python3-setuptools pip3 install adafruit-circuitpython-epd wget https://github.com/adafruit/Adafruit_CircuitPython_framebuf/raw/main/examples/font5x8.bin sudo apt-get install fonts-dejavu sudo apt-get install python3-pil pip install HomeAssistant-API from PIL import Image, ImageDraw, ImageFont sudo apt install fonts-dejavu-core install git clone repo

Configuration

Copy the .env.example file to .env and fill in the variables as needed.

Developing

Building Components

fetch_data Method

render Method

To accelerate local development of views, you can simply render the component to a png and show the result using a mock, e.g. for a sensor:

from unittest.mock import Mock
from components.sensor import Sensor
s = Sensor("test", (250, 122))
s._has_content = True

s.entity = Mock()
s.entity.state = 42
... # set all other required data

# call this every time you change something about the render method
img = s.render()

# this should open a window with the image rendered,
# call this again after calling s.render()
img.show()