The SG90 servo is a high quality miniature servo with tiny dimensions, and it is also quite cheap. It works with most electronic control cards with microcontrollers and also with most commercial radio control systems. It works especially well in model aircraft due to its torque, size and weight characteristics. The SG90 servo has a universal “S” type connector that fits perfectly into most RC receivers including Futaba, JR, GWS, Cirrus, Hitec and others. The wires in the connector are distributed as follows: Red = Power (+), Brown = Power (–) or ground, Orange = PWM signal. This type of servo is ideal for the first learning experiences and practices with servos, since its power requirements are quite low and it is possible to feed it with the same power supply as the control circuit. For e.
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