> **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

# M5Stack 1 to 3 HUB Expansion Unit

**Type:** Product page · **SKU:** CE07625 · **Brand:** [M5Stack](https://core-electronics.com.au/brands/m5stack-australia)
**Page:** https://core-electronics.com.au/m5stack-1-to-3-hub-expansion-unit.html ([markdown](https://core-electronics.com.au/m5stack-1-to-3-hub-expansion-unit.html.md))

HUB is a unit that is used in order to expand the GROVE ports over the M5Stack device. For example, if we want sensors with different IIC addresses or output to 3 devices at the same time. (M5Stack device usually can output one device at a time to to limited amount of grove ports)

## Pricing

- **Price:** $7.25 (inc GST) — $6.59 AUD, exc GST
- **Quantity discounts:** 10+ $6.33 (exc GST) · 25+ $6.13 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Sep 02.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE07625:1` (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/CE07625:1.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

HUB is a unit that is used in order to expand the GROVE ports over the M5Stack device. For example, if we want sensors with different IIC addresses or output to 3 devices at the same time. (M5Stack device usually can output one device at a time to to limited amount of grove ports)

Notice: HUB is just a hardware expander, if you are looking for hardware and software (standard protocol) expander like I2C, Single-bus, please check PaHUB or PbHUB.

If you are connecting two I2C slave devices onto HUB that share the same address, you will have problem getting I2C data from both. The I2C addresses of the devices must be different, they can be changed manually by changing the resistor values.

**Features**

- GROVE Expander
- Two Lego-compatible holes
 
**Includes**

- 1x HUB Unit
- 1x Grove Cable
 
**Specifications**

- Net weight: 5g
- Gross weight: 17g
- Product Size: 32\*24\*12mm
- Package Size: 67\*53\*12mm

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/5/m5-stack-u006-1.jpg)