For example an spi display or TV-out (using the TV-out library, probably on a second arduino). Reason for me to ask, I’ve got a Yamaha PSR-S500 with defective display, new displays are around ...

This allows connection to your Arduino (or other microcontroller) using only four channels. Yippee! I2C LCD Backpack. ... The hardware configuration described have been tested with an Arduino UNO R3, ...