https://www.armbian.com/  for my case

- Install fswebcam (sudo apt-get install fswebcam) and connect your webcam

- Connect and configure your printer (very useful link https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi/connect-and-configure-printer)

- Connect button (for my case PA.10 pin is used as input and connected to one button's pin and another pin is connected to 3.3V pin)

- (optional) Connect button's LED or separate LED (for my case PA.14 pin is connected to LED's + terminal and GND pin to LED's - terminal)

- Clone https://github.com/kami4ka/Poor-Man-s-Polaroid to your single-board PC

- Install requirements for Python script (pip install -r requirements.txt)

- Change GPIO lib setup inside script to fit your wiring

- Add main.py file to crontab for run after single-board PC boot (https://www.cyberciti.biz/faq/linux-execute-cron-job-after-system-reboot/). So my crontab have only one line: @reboot python /home/kami/printer/main_app/main.py, where /home/kami/printer/main_app/main.py is a path to main.py file