When I didn’t move any where,the no correlation.
When I hold the motion sensor and went straight to the wall,it went positive.
If I go backward,it went negtive .
When I’m doing this one,first I went backward,then stop,then walked backward again,only a little bit,then went forward.
First I didn’t move,then went forward,stop a little then backward, stop for a longer time.
First walk forward very slow,then stop,then suddenly went backward for a really long distance,stop again then suddenly went forward for a shorter distance.
First I did not move,then suddenly forward,stop,suddenly backward,stop,suddenly backward again,and stop to the END.