Corsair K70 RGB - Decoding the LED Positions

Reverse engineering the USB protocol for the Corsair K70 RGB keyboard. In the previous videos I knew enough to set all the LEDs on and off at once, but in this video I wrote a program to cycle through each individual LED. They are cycled through in the order they appear in the USB protocol, though the position in the protocol does not seem to have much of a correlation on the physical position on the keyboard so making a program to do LED waves and such would need to use a lookup table to map physical position to data position. This video serves the purpose of said lookup table.

The tablet is not actually controlling the keyboard, it's just an SSH session into my living room Linux box. I put it there so I could capture the LED data position index along with the physical location together on camera, though my camera decided focusing wasn't a good idea so it's a bit hard to make out the numbers on the screen.

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