> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # 30KG Serial Bus Servo, High precision and torque, with Programmable 360 Degrees Magnetic Encoder **Type:** Product page · **SKU:** WS-22414 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia) **Page:** https://core-electronics.com.au/30kg-serial-bus-servo-high-precision-torque-360-degree-magnetic-encoder.html ([markdown](https://core-electronics.com.au/30kg-serial-bus-servo-high-precision-torque-360-degree-magnetic-encoder.html.md)) 30KG Serial Bus Servo, High precision and torque, with Programmable 360 Degrees Magnetic Encoder, Two-way Feedback, Servo/Motor Mode Switchable... ## Pricing - **Price:** $38.80 (inc GST) — $35.27 AUD, exc GST - **Quantity discounts:** 10+ $33.86 (exc GST) · 25+ $32.80 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 9 today, and up to 300 more in 12–19 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-22414:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-22414:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Introducing the 30KG Serial Bus Servo, a high-precision, high-torque servo with a programmable 360° magnetic encoder and versatile features suitable for advanced robotics projects. ### Specifications | Product Type | ST3215 Serial Bus Servo | |---|---| | Torque | 30kg.cm @ 12V | | Rotation Angle | 360° (0~4095) | | Position Sensor Resolution | 360° / 4096 | | Mechanism Limited Angle | No Limit | | Operating Voltage | 6 ~ 12.6 V | | Gear | High-precision metal gear | | No-load Speed | 0.222 sec / 60° (45 RPM) @ 12V | | Encoder Type | 360° Magnetic Encoder | | ID Range | 0 ~ 253 | | Baudrate | 38400 bps ~ 1 Mbps (1 Mbps by default) | | Feedback | Position, Load, Speed, Input Voltage | | No-load Current | 180 mA | | Locked-rotor Current | 2.7 A | | Torque Constant (kt) | 11 kg.cm/A | ### Application Examples - Provides feedback like position, speed, and torque for advanced closed-loop control. - Ideal for building quadruped robots, hexapod walkers, robotic arms, and other projects requiring multiple servos. ![Quadruped Robot Example](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-3_596177eca81.jpg)\* Images are for reference only. ### UART Serial Bus Control Control up to 253 serial bus servos simultaneously. Note: Ensure adequate power supply when using multiple servos. The servo driver board is NOT included. ![UART Serial Bus Control](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-5_9879462fb7e.jpg)### Large Torque Up to 30kg.cm torque at 12V, perfect for robotic projects requiring strong and reliable servos. ![Large Torque Demonstration](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-7_897691b99e7.jpg)\* Images are for reference only. ### 360° Magnetic Encoder Adopts a 12-bit high-precision magnetic encoding angle sensor. This design extends the servo's lifetime by eliminating friction and gaps compared to potentiometers. ![360° Magnetic Encoder Design](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-9_12913ba878a.jpg)### Acceleration Start-stop Function The speed and acceleration values can be customized for smoother motion. ![Acceleration Start-stop Function](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-11-1_56691217a60.gif)**Motion Effect Diagram** ![Motion Effect Diagram](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-11-2_10973864d4a.gif)### Compact Structure Design High-strength engineering plastic case with a dual-shaft, low-profile design for a more compact and aesthetically pleasing structure. ![Compact Structure Design](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-13_78793022d64.jpg)### One Button to Calibrate the Middle Position Allows 360° installation at any position. A single button sets the current position as the middle, simplifying installation. ![Calibration Example](https://core-electronics.com.au/attachments/localcontent/ST3215-Servo-details-15-1_12063c34548.jpg)### Resources - [Wiki](https://www.waveshare.com/wiki/ST3215_Servo) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-22414-1.jpg)