How I fixed my lilliput touchscreen problems
Okay, I looked around and didn't see this posted yet. This pertains to the CY-4W-USB-03 touchscreen controller.
I know that others are having the same problems that I was having. The touchscreen would cut in and out, and often times it would forget that it was a resistive screen in the touchkit utility. Hopefully this may help other people.
I was so frustrated last night that I took out my screen and traced down all the wires for the USB and touchscreen. It turned out that the signal was not always going through to the USB from the touchscreen controller. On the controller was 4 wires - soldered directly onto the controller. It wasn't until I saw the EXACT SAME controller on www.digitalww.com that I realized there was supposed to be a pin connector, and not a direct wire solder.
What I did was to desolder the wires from the controller, then solder in an RJ-11 (telephone) plug. It has the 4 wires that I need, and this allowed me to make my own cable. I chopped off the USB connector on the computer side, and just used it as a reference as to what pins were connected to which of the 4 wires on the controller.
So now I have a cable with USB on the computer side, and an RJ-11 connector on the other side. (I'd like to say I chose this connector because it has the clip to hold it in place, or something else logical, but the fact is it was the only connector I had on hand.) Before testing it out, however, I had to remove the drivers and software and reboot. Then I reinstalled and rebooted again. Then after Windows (XP) came back up again, I plugged it in and installed the drivers for it. Now it works great and I have tried everything that would cause it to fail before, and it comes right up without a hitch every time. I did have to recalibrate it, as the calibration information was lost.
I would like to add how utterly ****ED OFF I am that my screen was hacked together my someone who couldn't hold a straight soldering iron if his life depended on it...
Anyhow, for those of you with similar problems and similarly soldered in wires, this may be worth a shot. Obviously the connector type doesn't matter, just that you make a new clean USB connection.
Good luck to all, and I'll try to put up the wire color information when I get home.