I started my TSSK
mod in July of 2011; I just finished it today. The last part of the mod was to get a working controller. Thanks to Soarers Converter, that is finally done. If you are not familiar with it, you can read about it and download the code from here
Early in my project, I knew that the keyboard would be USB and I wanted a removable cable. When I ordered a Teensy, I also ordered the panel mount USB cable, but that did not work very well. First, the two vertical pins on the bottom of the case had to come off because they blocked the ears of the panel mount cable. I also had to drill two holes on the back. After mounting the cable, I found that it protruded too far into the case to allow the case to close properly.
I had seen others use is a standard USB-B plug, but that is much smaller than the hole on the back of the Model M. I did not want to leave a large void like that and I liked the positive lock of the original IBM cable. The ideal thing to use would be an SDL connector as it would exactly fill the hole on the back of the Model M. The down side of this choice is that SDL connectors are almost impossible to find. And I would need a special crimp tool to get the plug on the end of a USB cable.
Hay, I have a crimp tool for RJ45 might that work? Sure. The jack height is the same as SDL and although the width is not, it is much closer than a USB-B would have been.
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