Servo Motor 25kg.cm 60RPM Metal Gears UART (ST3020)

31-00024703
ST3020 Servo
Waveshare Serial Bus Servo Driver Board
Waveshare ESP32 Servo Driver Expansion Board
 
CompanyWaveshare Part NumberST3020 Servo
In Stock
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2990
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10+
Price
26.91
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High Precision And Large Torque, 25kg.cm Serial Bus Servo

With Programmable 360 Degrees Magnetic Encoder, Two-Way Feedback, Servo/Motor Mode Switchable. Supports 6~14V Wide Range Voltage input, with 360° Magnetic Encoder

UART Serial Bus Control

Allows controlling up to 253 serial bus servos at the same time


Note: though one channel UART can control up to 253 serial bus servos, due to the high power of the servos, it is necessary to consider whether the power supply solution is enough when using too many servos.

Easy to use, Large Torque

Supports 6.0~14V Wide range Voltage Input, And Can Be Directly Powered By 2S
or 3S lithium batteries. Up To 25kg.Cm Torque On 12V Voltage, Suitable For Building
Quadruped Robots, Hexapod Walkers, Robotic Arms And Other Robotic Projects
Requiring Multiple Servos

Aluminum alloy middle case, Iron-core Motor and Metal Gear Box

Adopts high-reliability Design, suitable for industrial equipments, robotics, and other application scenarios that require angle or speed closed-loop control

360° Magnetic Encoder for High Precision and Longer Lifetime

Adopts 12-bit high-precision magnetic encoding angle sensor. Compared with the carbon film potentiometer, the angle of the magnetic encoder is enlarged to 360°, and the resolution is increased by 4 times. Since there is a gap and no friction between the magnetic encoder and the radial magnet, the lifetime of the servo is effectively extended.

Acceleration Start-stop Function

The speed and acceleration values are settable to make the motion effect softer

One Button to Calibrate the Middle Position

360° installation at any position, one button to set the current position as middle position. Easy to install and debug

Two-Way Feedback

The Servo Will Provide Various Feedback Like Position, Load, Speed,
Input Voltage, Current and Temperature In Real Time

Multiple operation modes for more application scenarios

  • Angle servo mode Default mode, the angle position is controllable at 0~360° degrees
  • Speed closed-loop motor mode Motor mode, intelligently control and maintain speed when the load changes
  • Step mode Can perform step motion relative to the current position

Multi-Loop angle Position control

Supports angle position control in both positive and negative directions up to 7.5 loops under the default precision setting, but the number of loops will not be saved in case of power loss. Lowering the angle resolution can double the number of control loops

Supports installing flat key shaft flange

With the flat key shaft flange designed for this serial bus servo, the output shaft of the servo can be installed on more devices, making full use of various working modes and excellent low-speed performance. It can be used to install various transmission parts such as 6mm shaft couplings, wheels, timing pulleys, and gears.

All-metal servo bracket

More Convenient to Develop the Structural Components, Combination Use More Flexible

Structural Details

  • Aluminum alloy middle case Improved heat tolerance, size stability, rigidity, and mechanical performance
  • High strength aluminum servo wheels Using T6061 aluminum alloy, good anti-corrosion performance
  • High precision copper and steel gears The combination of the two types of gears allows the servo to work with lower working noise, and enhances its stability and mechanical performance
  • All-metal bracket More convenient to combine it with other devices

Open Source Control Program

We provide the open-source web control demo of the servo driver board and a secondary development tutorial, which can be directly used for remote setting and remote control of the servo. At the same time, we also provide a 3D model for you to build your project quickly.

Application Examples

Servos will provide various feedback like load, position, speed, torque lock, and working mode (servo mode, servo motor mode, etc.) for advanced projects requiring closed-loop automatic control.
Ideal choice for building quadruped robots, hexapod walkers, robotic arms and other robotic projects requiring multiple servos.

  • Torque: 25kg.cm@12V
  • Rotation angle: 360° (0~4095)
  • Position sensor resolution: 0.088° (360°/4096)
  • Mechanism limit angle: No Limit
  • Working voltage: 6 ~ 14 V (typ. 12V)
  • Gear: high precision metal gear
  • No-load speed: 0.167sec/60° (60RPM)@12V
  • Encoder type: 12Bits magnetic encoder
  • ID range: 1 ~ 253
  • Baudrate: 38400bps ~ 1Mbps (1Mbps by default)
  • Feedback: Position, Load, Speed, Input Voltage, Current, Temperature
  • No-load current: 200mA@12V
  • Locked-rotor current: 2.7A@12V
  • Kt: 9.26kg.cm/A
  • Weight: 0.097 kg

In the box

ST3020 Servo x1

Dimensions

Warranty
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Company
Waveshare
G. Weight
0.023kg
Gear Type
Metal
Rotation
360°
Speed (6V)
0.16sec/60°
Torque (6V)
25 kg.cm
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