Hello everybody , I'm wondering how to make this thing work as seen in Johnny's video , I have not face any problems in making it works as concept I.e. pushing buttons , scrolling etc .. , my problems are: some area of screen is not being manipulated by the the IR pen -I'm sure I'm not covering it with my hand - , another thing is that when trying to find the best position , I get it right in the place I'm trying at, when successful moving to other point I observed a little difference , moving on again to an extreme point that fraction just get bigger and so on , is there is a specific point to test at so that other tests in other points would yield the same result or this is a positioning issue ?
Thanks in advance