Keyestudio Smart Little Turtle Robot V3 Manual page 208

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myMatrix.clear();
}
void loop()
{
if(Serial.available()>0)
{
BLE_val = Serial.read();
Serial.println(BLE_val);
}
switch(BLE_val)
{
case 'F': car_front();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_front2);
break;
case 'B': car_back();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_back2);
208