# 40kg.cm Metal Serial Bus Servo

**Type:** Product page · **SKU:** WS-24702 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/40kg-metal-serial-bus-servo.html ([markdown](https://core-electronics.com.au/40kg-metal-serial-bus-servo.html.md))

40kg.cm Metal Serial Bus Servo, Wide Range Voltage, High Precision And Large Torque, With Programmable 360 Degrees Magnetic Encoder and Brushless Motor,...

## Pricing

- **Price:** $134.95 (inc GST) — $122.68 AUD, exc GST
- **Quantity discounts:** 5+ $117.77 (exc GST) · 10+ $114.09 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 07.

## Description

40kg.cm Metal Serial Bus Servo, Wide Range Voltage, High Precision And Large Torque, With Programmable 360 Degrees Magnetic Encoder and Brushless Motor, Two-Way Feedback, Servo/Motor Mode Switchable 40kg.cm metal serial bus servo

Metal case, with Brushless Motor and 360° Programmable Magnetic Encoder

 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-1_14850d22934.jpg) Specifications | **Product type** | ST3025 serial bus servo |
|---|---|
| **Torque** | 40kg.cm@12V |
| **Rotation angle** | 360° (0~4095) |
| **Position sensor resolution** | 0.088° (360°/4096) |
| **Mechanism limit angle** | No Limit |
| **Working voltage** | 6 ~ 12.6 V (typ. 12V) |
| **Gear** | high precision steel gear |
| **No-load speed** | 0.117sec/60° (85RPM) |
| **Encoder type** | 12Bits magnetic encoder |
| **ID range** | 1 ~ 253 |
| **Baudrate** | 38400bps ~ 1Mbps (1Mbps by default) |
| **No-load current** | 380mA |
| **Locked-rotor current** | 4.4A |
| **Kt** | 9kg.cm/A |
| **Feedback** | Position, Load, Speed, Input Voltage, Current, Temperature |

 
Application Examples - Servos will provide various feedback like load, position, speed, input voltage, working current, 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. (This product provides the open source models as shown in the picture below)
 
 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-3-1_276390736c2.jpg)**Download models:**  [![](https://core-electronics.com.au/attachments/localcontent/icon-STEP_1568ca4a64.png)](https://core-electronics.com.au/attachments/localcontent/CLAWER-6_based_on_ST3025_STEP_265182b5bd8.zip) [![](https://core-electronics.com.au/attachments/localcontent/icon-F3Z_1501ac439b.png)](https://core-electronics.com.au/attachments/localcontent/CLAWER-6_based_on_ST3025_F3Z_60426854565.zip)

 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-3-2_23737d2876d.jpg)**Download models:**  [![](https://core-electronics.com.au/attachments/localcontent/icon-STEP_1568ca4a64.png)](https://core-electronics.com.au/attachments/localcontent/CLAWER-4_based_on_ST3025_STEP_262530f6c3c.zip) [![](https://core-electronics.com.au/attachments/localcontent/icon-F3Z_1501ac439b.png)](https://core-electronics.com.au/attachments/localcontent/CLAWER-4_based_on_ST3025_F3Z_5947446c7a2.zip)

 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-3-3_181174c99cd.jpg)**Download models:**  [![](https://core-electronics.com.au/attachments/localcontent/icon-STEP_1568ca4a64.png)](https://core-electronics.com.au/attachments/localcontent/PT_based_on_ST3025_STEP_32960b5ebc4.zip) [![](https://core-electronics.com.au/attachments/localcontent/icon-F3Z_1501ac439b.png)](https://core-electronics.com.au/attachments/localcontent/PT_based_on_ST3025_F3Z_1050249e24d.zip)

 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-3-4_16593f10d7a.jpg)**Download models:**  [![](https://core-electronics.com.au/attachments/localcontent/icon-STEP_1568ca4a64.png)](https://core-electronics.com.au/attachments/localcontent/ARM_based_on_ST3025_STEP_367076a30e1.zip) [![](https://core-electronics.com.au/attachments/localcontent/icon-F3Z_1501ac439b.png)](https://core-electronics.com.au/attachments/localcontent/ARM_based_on_ST3025_F3Z_13424a8544b.zip)

\* images here are for reference ONLY

 
UART Serial Bus Control Allows controlling up to 253 serial bus servos at the same time

 ![](https://core-electronics.com.au/attachments/localcontent/ST3025-Servo-details-5_67575a596d6.jpg)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. For reference only, the

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-24702-1.jpg)