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  1. V

    Hacking Ultegra Di2?

    There is a lot of chatter in the forums about Di2 using the CAN bus, although nobody has yet connected to it with a decoder. The Single Wire CAN bus (GM version, SWCAN) requites a minimum of three wires (ground, power and signal). I don't have a Di2 yet, so I can't see for myself, but from the...
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