Pi Display

A python based raspberry pi program that can run periodically to display various data points on an Waveshare e-ink display (I have created it for a 4.2 inch display but it is easily adaptable from others).

This was forked from the great work of Rachel Bitting, thanks for setting up a great groundwork for me to work off of!

The display currently shows:

• Date
• Weather
• Sunrise/sunset
• London underground line status
• CO2 monitoring
• Last.fm data that cycles between

Prerequisites

1. Install python 3.7+
2. Copy .env.example as .env and add your OpenWeatherMap and Last.fm api keys

Pi Set Up

This set-up guide assumes you are running Raspbian on your Pi and have already set up internet access.

1. Complete the Waveshare hardware/software set-up instructions for your relevant screen.

2. Set up a cron job to run the display refresh at regular intervals. Enter the command crontab -e to edit the crontab file. Then add the following line (this will run the script every 30 minutes):

   */30 * * * * cd /home/pi/repos/pi-display/python && python3 main.py

3. Set up a cron job to run the display refresh on Pi start-up. Enter the command crontab -e to edit the crontab file. Then add the following line:

   @reboot sleep 30 && cd /home/pi/repos/pi-display/python && python3 main.py &

4. Reboot the Pi for all updates to take effect.

Notes

• All logs are stored under the /logs directory on your Pi

Troubleshooting

• If display is printing incorrect times, you may need to update the timezone of your Pi: sudo raspi-config -> Internationalisation Options -> Change Timezone -> Follow screen directions to change country and time zone

• If you receive errors around the font files, update the font permissions: chmod 744 assets/fonts