This is a mechanical take on the classic piggy bank. With the cashless society approaching, how are kids going to understand money? Why, with grisebank, of course!

1. enable SPI1 because we want to add a lot of stuff: https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=22608&p=1216154#p1216154

1. Install everything listed in requirements.txt
2. Copy config.ini.example to config.ini and edit the stuff in the secret section
3. Start the app and start #openbanking