modefy a parameter in Sensorgyro.java
Merge branch 'master' of https://github.com/jackyang74/SmartCar
Merge branch 'master' of https://github.com/jackyang74/SmartCar
Merge branch 'master' of https://github.com/jackyang74/SmartCar
test ultrosonic
Merge branch 'master' of https://github.com/jackyang74/SmartCar
delete wrong sentence