I got my touch screen last week and I managed to spent some time on it on Saturday. Once I saw it’s working, I was exploring the options to fit the USB interface inside and have it working. My first problem was to find a way not to disable the existing 2 USB ports, but rather to get it inside and get it work with minimum impact.
Since the included keyboard is a detected as a USB hub and USB keyboard and USB mouse, I opened the keyboard to find out the pinout. It took less then 30 minutes to determine the pinout and I started think about stuffing the interface inside of the tablet. And is not that small…
I opened the TC1100 case, removed the modem daughter board, take out the board completely as you need access to the back to solder the wires. Using my wrapping wires and my soldering station I was able to get the Vcc and Data+/Data- signals to the other side of the board where I placed the touch screen interface. I had to remove both connectors from the board as there is no space to use them (have to make the board to have a very slim profile or else will not fit. Soldering the cables directly on the board and using the wrapping wires helped a lot: I was able to close the casing back after connecting the screen just above the PCMCIA slot.
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I did a recalibration of the screen once done and… voila! I have a fully functional TC1100 running with touch screen and digitizer. All I need now is to place a frame around the screen to mask it, something like a bezel. I just need to find a 2 mm thick plexiglass then need to cut it… Wish will be as simple as the hacking part.
I’ll try to put some pictures up and eventually upload a movie on utube on this :-)