> **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

# Expansion Dock for Onion Omega

**Type:** Product page · **SKU:** DEV-14439 · **Brand:** [Onion Omega](https://core-electronics.com.au/brands/onion-omega-australia)
**Page:** https://core-electronics.com.au/expansion-dock-for-onion-omega.html ([markdown](https://core-electronics.com.au/expansion-dock-for-onion-omega.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: Onion.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/Onion

## How to buy

- **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 Expansion Dock is the perfect companion for the Omega, making it incredibly convenient and easy to use as well as exposing a variety of the Omega’s features. We strongly recommend getting a Dock for your Omega to get the best experience and most performance, functionality, and stability from your device.

### Convenience

You can provide power to the Omega and Dock with any Micro USB cable. The Dock includes a regulator circuit that ensures the Omega always receives the stable 3.3V it needs to operate optimally.

### Functionality

The Dock exposes several of the Omega’s features to the user:

- The Omega’s GPIOs are exposed on the Expansion Header. Use the header to plug in Onion Expansions or connect to external circuits
- Connect USB devices directly to your Omega
- Control the RGB LED on the Dock using the Omega’s GPIOs
- Press the Reset Button to reboot your Omega, hold it for 10 seconds to perform a factory restore
- Turn your Omega on and off with the Power Switch
 
### Modular

Compatible with all Omega Expansions. Extend the functionality of your Omega by connecting one of our plug and play Expansions.

### Ease of Use

Thanks to the on-board USB-to-Serial chip, you will always have access to the Omega’s serial terminal. No network connectivity required, just a solid USB connection. The serial terminal is especially handy when accessing the bootloader to reflash your Omega.

![](https://raw.githubusercontent.com/OnionIoT/Onion-Docs/master/Omega2/Documentation/Get-Started/img/unbox-5-omega-switched-on.jpg)

### Technical Details

- 1x Micro USB Port – Power and serial terminal access
- 1x USB-A Port – Connect USB devices to the Omega
- 1x On-board RGB LED
- 1x Reset Button
- 1x Power Switch
- 30-pin Expansion Header
 
### Links

- [Expansion Dock Hardware Overview](https://docs.onion.io/omega2-docs/expansion-dock.html)
- [Using the Expansion Dock](https://docs.onion.io/omega2-docs/expansion-dock.html#using-the-dock)
- [Technical Drawing](https://raw.githubusercontent.com/OnionIoT/technical-drawings/master/Mechanical/OM-D-EXP.pdf)
- [Controlling the Omega’s GPIOs](https://docs.onion.io/omega2-docs/using-gpios.html)
- [Using USB Storage with the Omega](https://docs.onion.io/omega2-docs/usb-storage.html)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/4/14439-03.jpg)