aidisplay

• Reads the current weather at a given location
• transforms weather information into a prompt for replicate
• queries replicate with prompt and downloads image
• displays image

Setup

• get an API token from replicate.com

• choose a model from https://replicate.com/stability-ai/stable-diffusion/versions or use the default one in the generate-image.py

• use a desktop based normal raspbian distro

• make sure to have ssh and wifi setup during image creation

• git is already installed, so git pull the repo into `pi/Code/``

• install replicate via pip install replicate

• install feh image viewer with sudo apt install feh -y

• change the permissions for cron.sh with chmod 755 cron.sh

edit profile with sudo nano /etc/profile at the end of the file, add

export REPLICATE_API_TOKEN=<API TOKEN> 
nohup feh -F --zoom fill -D30 -R30 /home/pi/Code/aidisplay/images/current.png

This instructs feh to fill the whole display with the image, and check every 10 seconds for new images (R) and display them for ten seconds (D). The API Token is not needed for the script to execute fine, but is convenient when you have to manually execute a script to test if it works.

Setup a the cron jobs. For this, enter crontab -e and add these lines:

0 */3 * * * REPLICATE_API_TOKEN=<API TOKEN> /home/pi/Code/aidisplay/cron.sh >> /home/pi/Code/aidisplay/log.txt >2&1

• runs every 3 hours starting at boot time
• saves all text output in a log file
• for testing purposes, you might want to check on a shorter interval, e.g. five minutes: */5 * * * *

Next, edit the root crontab (for shutdown privileges), enter sudo crontab -e and add this line:

00 21 * * * sudo shutdown

• shuts down the system every day at 21

Disable Screen Sleep

As a final step, boot into the Raspbian Desktop (you can connect a mouse and right click to exit the picture viewer mode) and disable the screen saver: Menu > Preferences > Raspberry Pi Configuaration > Display > Screen Blanking (Off)

RUN

reboot system with sudo reboot and you should be done.