[MikeDubreuil]

Originally Posted by B_Dubbs

Distance = 0
Distance = 5
Distance = 0
etc.
Does anyone know why t has these jumps to zero?

You'll need to provide more information for me to understand the problem. Is 5 the correct distance? Where does Ping_Sonar() and Get_Sonar_Distance() get called in your code? I seem to remember while developing the code that many print statements in the code cause bizarre results, watch out for that too.