Size: Very compact and lightweight, typically weighing around 9 grams. This makes it ideal for projects with limited space.
Operating Voltage: Wide operating range, typically from 3.0 volts to 7.2 volts DC. This allows for flexibility in power source selection.
Torque: Offers decent torque for its size, typically around 1.2 kg-cm at 4.8V. This is suitable for moving lightweight objects.
Rotation Angle: Approximately 180 degrees (though some specifications may say 90 degrees, referring to the usable range in each direction).
Speed: Relatively slow rotation speed, around 0.1 seconds for 60 degrees at 4.8V.
Construction: Plastic gears and case, making it lightweight and affordable.
Common Uses:
Robotics: Particularly well-suited for smaller robots due to its compact size and weight. Can be used for moving limbs or manipulating small objects.
Animatronics: Creating small, controlled movements in robots or props.
Educational projects: Great for beginners due to its affordability and ease of use.
Hobbyist projects: Applications requiring precise positioning of lightweight components.
Here are some additional things to keep in mind about the SG90:
While it offers a wide voltage range, using a higher voltage will increase torque but also decrease lifespan and speed.
The plastic gears make it less suitable for high-stress applications compared to servos with metal gears.