Again we do not do heavy sound DP3, this is not a good project, the more than 12864 DELTA PULSE display is a no sense, and there is no reset button, the coil can not move, move it aloud, Worse 1X1m coil more unstable, can not even detect, detection distance is far less than DELTA PULSE, I did a year did not get good results, big box simply can not use, I DELTA PULSE improved, 10X10CM can detect 1.5 m, DIY friends who are interested to contact me