</pre>
0x3c 3c is a hexadecimal number, it is the I2C address of OLED, if you can’t find this value, please shut down and reconnect X630-A3&OLED and run this command, If you still can't find the OLED's I2C address, the OLED screen may be damaged.
4. Then run the following command to enable OLED display: