iDrive

a)Place the iPhone/iPod Touch on a flat, horizontal surface (e.g. a table) b)Double-click on the bottom-left button, and orientate the device as required. For ease of operation, the software will tell you if orientation is correct or not. When it is, a countdown will start. Keep the device as steady as possible during this time. The operation will be repeated three times, one per each axis (X, Y, and Z). By the way, the intruction listed above are from the This calibration is not working on my 3G. When I double tap the icon, the X goes for 10 seconds, and stop! It says X NOT VERTICAL. The instruction pasted above from the author's web site are easy to follow. Also, when I tap the 1000kg, the time to enter a new value is too short, about a second. The same is valid for the 70cm.