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I haven't personally used the HiTechnic sensors, but the difference between a gyroscope and a compass is that one measures absolute orientation and the other measures change in orientation. The compass measures absolute orientation via a magnetometer that measures the effect of the Earth's magnetic field on the sensor. The gyro sensor uses some form of MEMS ...


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"Both Lego and MEGA Brands use injection-molded ABS (acrylonitrile butadiene styrene) plastic to manufacture their elements." -by oddTodd Jun 15 '13 TL;DR: Mega Bloks are NOT ABS. Based on oddTodd's statement alone, I went to the local resale shop and bought a few Mega Bloks for a few cents. My intention was to use the Mega Bloks as a source of colored ...



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