The contents of this folder are to be copied to the RPi. There are 3 essential parts-

• fetch.py: A Python script that runs in the background and periodically fetches images from the server. We set up a cron job for this.
• gui.py: The main script that runs on boot and occupies the foreground. This displays the images on the TV.
• config.json: Helps you define the configuration for how you want the images to appear on the TV.

1. Install a standard Raspbian OS on the RPi.
2. Configure the RPi to connect to internet. If it is an RPi-3, connect using wifi. Follow the official docs to learn how to connect through wifi. To connect to IITB-Wireless, use the wpa_supplicant.conf specified here. For RPi 2 or below, connect using an external wifi module or ethernet.
3. SSH into the RPi.
4. On the RPi, download the rpi folder. //Insert command
5. On the RPi, execute sudo apt-get install python-tk python-imaging python-imaging-tk x11-xserver-utils
6. On the RPi, execute sudo crontab -e. It might prompt you to choose a text editor. (Choose nano if you don't know what to do.) Add the following line at the bottom of the file- * * * * * (cd /home/pi/rpi/; python fetch.py) >> /home/pi/rpi/TV_log.txt 2>&1. This would run our fetch script every minute and save all output in the TV_log file created inside ~/rpi.
7. On the RPi, cd into the rpi folder and execute chmod 755 launcher.sh.
8. On the RPi, execute sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart. Add the following line to the bottom- @sh /home/pi/rpi/launcher.sh.
9. Disable standby screen blanking. Execute sudo nano ~/.config/lxsession/LXDE-pi/autostart and add the following-

@xset s 0 0
@xset s noblank
@xset s noexpose
@xset dpms 0 0 0

Ctrl + X, Y and Enter. Hit sudo reboot