I’m a little unsure about the
/grid/led/map address. From the protocol document
Set a quad (8×8, 64 buttons) in a single message. Each number in the list is a bitmask of the buttons in a row, one number in the list for each row. The message will fail if the list doesn’t have 8 entries plus offsets.
If my grid is 8x8 is this address equivalent to