Keyestudio Smart Little Turtle Robot V3 Manual page 148

www.keyestudio.com
The generated hexadecimal code(0x00, 0x66, 0x00, 0x00, 0x18, 0x42, 0x3c,
0x00) is what we display, and save it.
(6) Connection Diagram
Note: The pin G, V, SDA and SCL of dot matrix module are separately
connected to G, 5V, A4 and A5 of motor drive shield. Plug power to BAT
148