Can the serial LCD operate faster than 2400 baud?
Yes there is a jumper there to make it faster but if you use faster baud then you probably need to use one of the real serial ports instead of our serial driver. With current implementation, you can use any pin but if you use hardware serial then you are limited to few pins…and you will lose the serial interface just to control the LCD.
By the way, going to faster baud may not give you better results since the display itself is not very fast. Let us know how it goes
Oh, I see the jumper to switch between 2400 and 9600.
Yes that is exactly it.