eGalax touchscreen calibration

[Markamc]

Think you have overscan on when running ts_calibrate 'xres=1240', this may give you the offset problem. anyhow,you can change the values in pointecal as follows:

Sorry about the formatting I can send spreadsheet if you like. You can try the final line as new pointercal file., if inverted axis just change the sign of the corresponding xscale / yscale values.

Code:

POINTERCAL                                    
xscale    xymix    xoffset    yxmix    yscale    yoffset        scaler    xres    yres    swap
47419    111    -9640392    -260    27323    -3837576    65536    1240    720        0
values/scaler                                    
0.724    0.0017    -147.10    -0.004    0.417    -58.557            
                                    
OLD CALIB FILE                                    
calib_x_d=1358;calib_x_fact=-0.700770;calib_y_d=775;calib_y_fact=-0.420659;swap_axes=0;                                    
xscale        xoffset    yscale        yoffset
-0.70077    -78        -0.420659    -55                
old calib * scaler                                    
-45925.66272        -5111808        -27568.30822    -3604480                
new pointercal                                    
xscale    xymix    xoffset        yxmix    yscale    yoffset        scaler    xres    yres    swap


-45926    111        -5111808    -260    -27569    -3604480    65536    1240    720        0