> **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

# Qwiic USB Development Kit - SAMD21

**Type:** Product page · **SKU:** SPX-24639 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/qwiic-usb-development-kit-samd21.html ([markdown](https://core-electronics.com.au/qwiic-usb-development-kit-samd21.html.md))

A USB development board for the SparkFun Qwiic system...

## Pricing

- **Price:** $45.65 (inc GST) — $41.50 AUD, exc GST
- **Quantity discounts:** 5+ $40.25 (exc GST) · 25+ $39.43 (exc GST) · 100+ $37.76 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 07 and Sep 11.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SPX-24639:1` (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/SPX-24639:1.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 Qwiic USB Development kit is designed for folks that want to interface a Qwiic device quickly and easily to a computer. The core processor is the SAM21 which allows quick (hah!) and seamless serial printing over USB, as well as easy development and programming using the Arduino environment. The professional printed enclosure makes the device easy to plug/unplug as well as allowing Qwiic boards to be mounted to the enclosure itself.

The development kit features two Qwiic connectors and a user-addressable WS2812 LED. In case you need more IO, there are four GPIO pins, accessible by removing the enclosure, two of which are ADC pins. This little device is not only a great tool for making compact prototypes, but a handy way to add Qwiic sensors to your PC-based projects.

**Experimental Product:** [SparkX](https://www.sparkfun.com/sparkx) products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our [forum](https://forum.sparkfun.com/viewforum.php?f=123) for support or to ask a question. ### Features

- ATSAMD21G18 32-bit/48MHz ARM Cortex-M0+
- 256KB Flash Memory
- 32KB SRAM
- 32KB of EEPROM (emulated in Flash)
- 2x Qwiic Connectors
- WS28112 Addressable LED
- Plastic Enclosure with Mounting Holes for Qwiic Boards
- Male USB-A Connector (like a flash stick)

### Documents

- [Schematic](https://core-electronics.com.au/attachments/localcontent/Qwiic_USB_Bridge_76189e939e7.pdf)
- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/Qwiic_USB_Bridge_ATSAMD21G_6326762c891.zip)
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/Atmel-42181-SAM-D21_Datasheet_1768570ee4f.pdf) (ATSAMD21G18)
- [Github Repo](https://github.com/sparkfunX/Qwiic_USB_Bridge/tree/main)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/P/SPX-24639-1.jpg)