Alexander Van de Rostyne built Pixelito, a 6.9 gram remote-control helicopter. Pixelito is fully functional, with 4 channels of control via infra red. It has no servos and no swashplate. The swashplate is the mechanism that allows the spinning blades to be tilted forward or back or side to side, allowing the pilot to control where the helicopter goes. (link from Stocktrader).

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