unicornhat-scripts

Scripts designed for the Pimoroni Unicorn HAT HD Raspberry Pi display module.

Instructions

Set up virtual environment

• python3 -m venv --system-site-packages venv
  • This command gives our virtual environment access to system-install packages which are needed by Numpy.
• source venv/bin/activiate

Install dependencies

• pip3 install -r requirements.txt

Run script

• python3 eth_base_fee.py

Instructions for running automatically when Raspberry Pi starts

Create the .service file

• Create /etc/systemd/system/unicornhathd.service with the following contents.
• Make sure to replace the script paths and user with the correct values for your system!

[Unit]
Description=Unicorn HAT HD Service
After=network.target

[Service]
ExecStart=/usr/bin/python3 /path/to/your/python/script.py
WorkingDirectory=/path/to/your/python/
StandardOutput=inherit
StandardError=inherit
Restart=always
User=pi

[Install]
WantedBy=multi-user.target

Configure the service to start on boot

• systemctl enable unicornhathd.service
  • This command adds the service to the directory indicated in the .service file; in this case we install the service at /etc/systemd/system/multi-user.target.wants

Notes

These instructions were tested on the Raspbian GNU/Linux 11 (bullseye) operating system.

To view to status of the service:

• systemctl status unicornhathd.service

To view logs of the service (for troubleshooting/debugging):

• journalctl -u unicornhathd.service