A Python script that uses similar smarts to our crypto ticker. It displays randomly-chosen highly-rated quotes from Reddit (r/quotes), a word of the day, a item from a flashcard text file or a stoic quote using a Raspberry Pi Zero and an ePaper screen.
(These instructions assume that your Raspberry Pi is already connected to the Internet, happily running pip and has python3 installed)
If you are running the Pi headless, connect to your Raspberry Pi using ssh.
Connect to your ticker over ssh and update and install necessary packages
sudo apt-get update
sudo apt-get install -y python3-pip mc git libopenjp2-7
sudo apt-get install -y libatlas-base-dev python3-pil python3-numpy python3-pandas
then, enable spi (0=on 1=off)
sudo raspi-config nonint do_spi 0
Now clone the required software (Waveshare libraries and this script)
cd ~
git clone https://github.com/waveshare/e-Paper
git clone https://github.com/veebch/edify.git
Move to the edify directory, copy the example config to config.yaml and move the required part of the waveshare directory to the edify directory
cd edify
cp config_example.yaml config.yaml
cp -r ~/e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd .
rm -rf ~/e-Paper
Install the required modules using pip:
sudo apt-get install libatlas-base-dev
python3 -m pip install -r requirements.txt
Run the script using:
python3 edify.py
Detach from the screen session using CTRL-A followed by CTRL-D
The unit will now pull data every 60 minutes (or whatever is specified in the configuration file) and update the display.
Rather than running via screen, if you'd like the script to start automatically every time the Pi is plugged in to a power supply, you can set up a systemd service with the following:
cat <<EOF | sudo tee /etc/systemd/system/edify.service
[Unit]
Description=edify
After=network.target
[Service]
ExecStart=/usr/bin/python3 -u /home/pi/edify/edify.py
WorkingDirectory=/home/pi/edify/
StandardOutput=inherit
StandardError=inherit
Restart=always
User=pi
[Install]
WantedBy=multi-user.target
EOF
Now, simply enable the service you just made and reboot
sudo systemctl enable edify.service
sudo systemctl start edify.service
sudo reboot
NB If you set up your Pi with an account name other than 'pi', you'll have to adjust the paths to the execuatble, as well as the User=pi in this script.
You can buy a fully assembled Audrey or a frame for one you've built at veeb.ch
Some people have had errors on a clean install of Rasbian Lite on Pi. If you do, run:
sudo apt-get install libopenjp2-7
sudo apt-get install libqt5gui5
sudo apt-get install python-scipy
sudo apt install libatlas-base-dev
and re-run the script.
If the unit is freezing, try switching to another power supply. I've lost count of the number of times I've spent half a day trying to debug what turned out to be a dodgy power supply.
GNU GENERAL PUBLIC LICENSE Version 3.0