Warren hacked up an Arduino to allow a playstation 2 controller to hook up to Star Rider. I am having trouble getting this working, so I reprogrammed the Arduino with the original PS2 example code which uses serial output to show what's going on. The only problem is I don't have a USB to 5V TTL adapter. So I thought about what I did have. I had a Papilio One FPGA dev board with a USB connection on it. I could program the FPGA to just pass the RX/TX signals through two of its I/O pins. However, this uses 3.3V, not 5V. So I couldn't just plug it directly into the Arduino. I needed something to shift the voltage level. Then I remembered my Disk ][ breakout board which I hadn't yet soldered up. This board does exactly what I need! So I ended up hooking the Arduino up to the Disk ][ breakout board to convert the 5V TTL to 3.3V TTL and then hooking that up to my Papilio One which is hooked up to my desktop. It works! :)
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