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Immerse the stuck assembly in soapy water, swoosh them around a bit, then try again. That should do the trick. It is okay to wiggle the piece a bit from side to side to try to loosen it up. Even ABS plastic LEGO pieces are somewhat flexible and they won't break if you flex them a bit. If nothing else works you may have to resort to plyers. Use the kind ...


The NXT works fine with EV3 motors, and will read them as NXT motors. EV3 sensors, on the other hand, do not natively work with the NXT, with the exception of the touch sensor. The reason for this is that, touch sensor notwithstanding, EV3 sensors use a hardware communication protocol called UART, which is not supported by the NXT. The NXT only supports ...

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