Keyestudio Smart Little Turtle Robot V3 Manual page 222

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car_front();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_front2);
}
if(Serial.available()>0)
{
BLE_val = Serial.read();
if(BLE_val == 'S')
{
track_flag = 1;
}
}
}
}
void follow_car()
{
servopulse(servopin,90);
int track_flag = 0;
while(track_flag == 0)
{
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