A program to calibrate the touch screen is included in the download. If your touch screen is inaccurate you simply install and run URTouch_Calibration. Follow the on-screen instruction to calibrate your touch screen.
The supplied calibration parameters are fairly accurate on my 3.2" S module. If you are using any other module you will have to run the calibration. For the best possible results you should run the calibration in any case.
More information about calibration can be found in the included manual. Make sure you read the manual before running the calibration sketch.
The D_BUSY signal is not needed and can be left floating/unconnected.
This is the same library as the previous UTouch library but the name had to be changed due to trademark issues. | 
: Not working
= Not tested, Unsupported