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  • Works great for connecting 3.3V to 5V I2C data line

    posted by gigamegawatts on 02/18/2013

    Involvement:General (knows how to use it) - Ownership:1 week to 1 month


    It works exactly as you would expect: connect 5V and GND to one side, 3.3V and GND to the other, and you can shift up to 4 bidirectional signals between 3.3V and 5. This adapter is a must-have if you're working with 3.3V boards like the Raspberry Pi. I've had one converting I2C signals for a couple of weeks now with absolutely no glitches.


    None, really. For 4 bidirectional lines, the price is right.


    An LED confirms when the voltage and ground is properly connected: a thoughtful design touch.


    This type of adapter isn't commonplace yet, so I was surprised to see it on DX. If you only have a couple of data lines to convert, DX also sells a 2-line adapter for a little less, 178301.

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