The libraries are somewhat spaghetti code and had to be rewritten in many cases. ... but since this post is about “interfacing an arduino with a serial lcd controller”, i’m quite disappointed.

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 ...

Power can now be supplied at up to 24V, an the main board interface is now USB-C. Software. For backwards compatibility with existing code examples and tutorials, “significant efforts are being made ...