LCD12864串行显示SIO超声波测距,去掉了温度校正部分,比较实用.SIO模块特别小,反应速度在12MS,适合用在小车测距避障.-LCD12864 serial display SIO ultrasonic range, the temperature correction to remove the part, more practical. SIO module is very small, the reaction rate of 12MS, suitable for use in t