Reference

Communication Protocol Description

When you have uploaded the sketch, you can control the module by AT command via serial port.
Baud rate: 115200

    AT+clear()                     Clear screen

    AT+set_cur(0)                  Initialize the cursor position

    AT+print(123,0)                Display "123" on top layer, and it doesn't support letter 

    AT+add_layer()                 Add a new layer

    AT+set_cur(0,8)                Reset the the cursor position.

    AT+put_char(0,8,65,1,0,3,1)    Rotate display "A" at (0,8) color: red+green

    AT+put_char(8,8,66,1,0,5,1)    Rotate display "B" at (8,8) color: red+blue

    AT+move(4,1,0)                 Move layer 0 right

    AT+move(3,1,0)                 Move layer 0 left

    AT+move(1,1,1)                 Move layer 1 up

    AT+move(2,1,1)                 Move layer 1 down

    AT+remove_layer(1)             Remove layer 1

Other Supplementary Information

• Manual

• Zip file with all of the above