> **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

# DDSM400 Direct Drive Servo Motor

**Type:** Product page · **SKU:** WS-28626 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/ddsm400-direct-drive-servo-motor-robotics-rc.html ([markdown](https://core-electronics.com.au/ddsm400-direct-drive-servo-motor-robotics-rc.html.md))

DDSM400 Direct Drive Servo Motor, Wide Speed Range Adjustable, Low Noise, All-In-One Design, Hub Motor, Supports Suspension Installation, Suitable For RC...

## Pricing

- **Price:** $47.70 (inc GST) — $43.36 AUD, exc GST
- **Quantity discounts:** 10+ $41.63 (exc GST) · 25+ $40.33 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 31.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-28626:1` (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-28626:1.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

The DDSM400 Direct Drive Servo Motor is a versatile, low-noise, all-in-one hub motor designed for RC cars, robot DIY projects, and other applications requiring precision and reliability. This advanced motor integrates cutting-edge direct drive technology, eliminating the need for a traditional reducer, resulting in enhanced efficiency, compactness, and performance.

![DDSM400 servo motor, overall appearance](https://core-electronics.com.au/attachments/localcontent/DDSM400-details-1_16909bf8cfb.jpg)

### All-in-One Robot Joint

The DDSM400 features a high-reliability Permanent Magnet Synchronous Motor (PMSM) that integrates an outer rotor brushless motor, encoder, and servo. This combination delivers unparalleled precision and performance for robotics applications.

![DDSM400 servo motor usage demo, installing on the robot chassis](https://core-electronics.com.au/attachments/localcontent/DDSM400-details-5_15846504e1a.jpg)

### Features at a Glance

- Ultra-low noise
- High precision and zero-backlash
- Fast response with direct drive technology
- Compact structure and high integration
- Supports LIN bus communication
- Provides feedback on position, speed, current, and error codes
- Features Hall position detection and over-current protection
- Supports electric braking
- Drive efficiency close to 99.99% due to no mechanical friction
 
### Specifications

 | **No-load speed** | 400 ±20 RPM | **Operating temperature** | -5°C ~ 40°C |
|---|---|---|---|
| **No-load current** | 0.25A | **Total weight** | 236g |
| **Rated speed** | 100 RPM | **Encoder resolution** | 12-bit |
| **Rated torque** | 0.15 Nm | **Rated current** | 0.24 ±0.07 A |
| **Locked-rotor torque** | 0.3 Nm | **Noise level** | ≤40 dB(A) |
| **Torque constant** | 0.3 Nm/A | **Input voltage** | 25.2V DC |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-28626-1.jpg)