https://www.instructables.com/MAX7219-7-Segment-Using-Arduino/
lc.setChar(0,7,'H',false);
lc.setChar(0,6,'E',false);
lc.setChar(0,5,'L',false);
lc.setChar(0,4,'L',false);
lc.setChar(0,3,'0',false);
lc.setChar(0,2,'.',false);
lc.setChar(0,1,'.',false);
lc.setChar(0,0,'.',false)...