A number of e-ink dashboards showing various types of information.
*** Shows Nightscout data on a Waveshare e-Paper display.
Based on: nightscout-osx-menubar: https://github.com/mddub/nightscout-osx-menubar waveshare e-paper demos: https://github.com/waveshare/e-Paper
I have this running on a Raspberry Pi Zero W running Raspbian Buster, with a 2.13 inch (v2) e-Paper display. The code can easily be adapted for other displays.
This project assumes you're using Python 3.
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo apt-get install python3-numpy
sudo pip3 install RPi.GPIO
Do not install pil and numpy with pip, as these do not install some required native libraries.
It doesn't seem there is an up-to-date packaged distribution of the waveshare epd libraries, so lib/waveshare_epd is simply a copy of the libraries at https://github.com/waveshare/e-Paper/tree/master/RaspberryPi_JetsonNano/python/lib/waveshare_epd
These libraries are required depending on which modules you want to use:
sudo pip3 install ephem # for calculating moon phases
sudo pip3 install --pre gql[requests] # for birthday data (graphql endpoint)
sudo pip3 install opencv-python # for sunspot image processing
sudo apt-get install libopenjp2-7 # for opencv
sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng-dev
sudo apt-get install libilmbase-dev libopenexr-dev libgstreamer1.0-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install libgtk2.0-dev libgtk-3-dev
sudo apt-get install libatlas-base-dev gfortran
In sudo raspi-config > Interface options > SPI, enable SPI.
If you are running headless, your system likely has no fonts. Download some here: https://dejavu-fonts.github.io/
Otherwise, fonts will probably be located in /usr/share/fonts/truetype/dejavu/
The font used for weather icons is included, or can be downloaded from https://github.com/jackd248/weather-iconic
Doesn't matter where you do this, /etc/environment is a convenient place. These are required:
export NSDASH_URL=<your nightscout site>
export NSDASH_FONT=<path to your font file>
export HKDASH_WL_KEY=<weerlive API key>
export HKDASH_WL_LOCATION=<weerlive location>
export EIDASH_SUNSPOTS_URL=<sunspot url>
List installed locales: locale -a
Generate locales:
sudo dpkg-reconfigure locales
Use space bar to select, use None for default.
The used locale is currently hard-coded (hkdash.py, nsdash.py).
Use timedatectl to set the timezone (tzselect doesn't work).
timedatectl # Show current settings
timedatectl list-timezones # List available timezones
sudo timedatectl set-timezone Europe/Amsterdam # Set the timezoneAdd to crontab -e or sudo crontab -e (if using neopixel):
@reboot cd /home/pi/repos/nsdash && python3 nsdash.py >> nsdash.log 2>&1
See https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT > Hardware/Software setup and https://pinout.xyz/
| HAT | RPI BCM2835 | RPI Board |
|---|---|---|
| VCC | 3.3V | 3.3V |
| GND | GND | GND |
| DIN | MOSI | Pin 19 |
| CLK | SCLK | Pin 23 |
| CS | CE0 | Pin 24 |
| DC | GPIO 25 | Pin 22 |
| RST | GPIO 17 | Pin 11 |
| BUSY | GPIO 24 | Pin 18 |