Keyestudio Smart Little Turtle Robot V3 Manual page 223

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distance = sr04.Distance();
if(distance<8)
{
car_back();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_back2);
}
else if((distance>=8)&&(distance<13))
{
car_Stop();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_stop2);
}
else if((distance>=13)&&(distance<35))
{
car_front();
myMatrix.clear();
myMatrix.writeDisplay();
matrix_display(matrix_front2);
}
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