The size of the characters in pixels is not given in their readme, nor could I find it easily in the config files. Can you tell me how big the characters in its readme are?
Weird that the lowercase letters with ascenders are taller than normal uppercase, I didn't notice that. But yeah, the core numbers+uppercase box is 3x5 (with only "Q" violating that). And it's all on a 4x8 grid.