Servo SG90 9g 4.8-6V 180 degree

Servo SG90 is widely used in car models to control the rotation of the front wheels, in aircraft modeling to turn the steering wheel and flaps of the model. In the era of the heyday of technical creativity in the Soviet Union, the name steering machine was assigned to the device of this class. Servo SG90 is used to rotate parts of various mechanisms. Thanks to the gearbox on the output shaft, a force is developed that is sufficient for use in mobile robots. The low speed of rotation of the shaft allows you to more accurately obtain the desired angle of rotation.

Inside the case is a small control module, which, under the influence of an input signal, supplies power of the appropriate polarity to the electric motor. The input control signal contains the required shaft position. To determine the current position of the shaft, the gearbox is connected to the variable resistor engine. The Tower Pro SG90 electronics calculates the difference between the current gear position and the desired position. The control module, focusing on the resistance of the variable resistor, supplies power of the required polarity to the motor to turn the gearbox, bringing the position transmitted by the control signal and the current one into line.
Information about the required position of the shaft is contained in the duty cycle of the control signal pulses. The frequency of the control signal must be constant and equal to 50 Hz. Duty cycle - the ratio of the pulse duration to the period. More often, when analyzing the parameters of the control signal, the duration of the pulse is considered. To form such a signal, it is convenient to use a microcontroller with the function of pulse-width modulation of the output signal.

When working on projects based on the Arduino controller, when programming the MK, a special software library of Servo functions is used.

Servo connection pinout:
Brownpower minus
Redplus nutrition
Orangecontrol

Specifications:
Gear Material: Nylon
Servo Type: Analog
Supply voltage: 4.8V
Rotation angle: 180°
Turn Speed: 0.1sec/60° @ 4.8V
Shaft force: 1.8/cm @ 4.8V
Dimensions: 22 x 12 x 31 mm.