7 Segment Displays controlled with a SAA1064

https://github.com/mymaestro/Arduino-projects/tree/master/SAA1064-library/libraries/SAA1064

The SAA1064 Chip can be used to control up to four 7 segment displays using I2C.

The default address is 0x70.

The link above can be used to get a library to control that chip with very little effort.