FUNCTIONING OF THIS SG90
SG90 Servo rotates approximately 180 degrees (90 in each direction) and works just like the standard kinds but smaller. It will fit in small places. It comes with 3 horns (arms) and hardware.
This SG90 generates 2.5 kg-cm (Approx) torque, and the motor can pull a weight of 2.5 Kg when it is suspended at a distance of 1 Cm. So as load suspended distance reduces load pulling capacity will increase.
SG90 is a high torque motor that is commonly used in robotics and several other applications because it’s easy to control their rotation. Tower Pro SG90 Servo motor has a geared output shaft. SG90 also used as actuators in many robotic arms, or as a steering system in RC toys. Due to its lightweight, it can be used in multi-DOF robots like humanoids.