> **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 # Adafruit QT Py - SAMD21 Dev Board with STEMMA QT **Type:** Product page · **SKU:** ADA4600 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-qt-py-samd21-dev-board-with-stemma-qt.html ([markdown](https://core-electronics.com.au/adafruit-qt-py-samd21-dev-board-with-stemma-qt.html.md)) What a cutie pie! Or is it... a QT Py? This diminutive dev board comes with Adafruit's favorite lil chip, the SAMD21 (as made famous in Adafruit's GEMMA M0 and Trinket M0 boards). ## Pricing - **Price:** $18.60 (inc GST) — $16.91 AUD, exc GST - **Quantity discounts:** 10+ $16.40 (exc GST) · 50+ $16.06 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 2 today, and up to 500 more in 8–12 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA4600:1` (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/ADA4600:1.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 What a cutie pie! Or is it... a QT Py? This diminutive dev board comes with Adafruit's favorite lil chip, the SAMD21 (as made famous in Adafruit's GEMMA M0 and Trinket M0 boards). This time it comes with Adafruit's favorite connector - the STEMMA QT, a chainable I2C port that can be used with any of our [STEMMA QT sensors and accessories](https://core-electronics.com.au/search/?q=stemma+qt). OLEDs! Inertial Measurment Units! Sensors a-plenty. All plug-and-play thanks to the innovative chainable design: SparkFun Qwiic-compatible STEMMA QT connectors for the I2C bus so you don't even need to solder! Just plug in a compatible cable and attach it to your MCU of choice, and you’re ready to load up some software and measure some light. Use any [SparkFun Qwiic boards](https://core-electronics.com.au/search/?q=sparkfun+qwiic)! Seeed Grove I2C boards will also work with this [adapter cable](https://core-electronics.com.au/grove-to-stemma-qt-qwiic-jst-sh-cable-100mm-long.html). Pinout and shape is Seeed Xiao compatible, with castellated pads so you can solder it flat to a PCB. In addition to the QT connector, They also added an RGB NeoPixel (with controllable power pin to allow for ultra-low-power usage), and a reset button (great for restarting your program, or entering the bootloader) Runs Arduino like a dream, and can be used for basic CircuitPython projects. For more advanced usage like datalogging or fire storage, solder an SOIC SPI flash chip onto the bottom pads. Adafruit have a detailed guide on how to set up the QT Py available [here](https://learn.adafruit.com/adafruit-qt-py). **Features** - Same size, form-factor, and pin-out as Seeed Xiao - **ATSAMD21E18** 32-bit Cortex M0+ - 48 MHz 32 bit processor with **256KB Flash** and **32 KB RAM** - Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console, MIDI, Keyboard/Mouse HID, even a little disk drive for storing Python scripts. - Can be used with **Arduino IDE** or **CircuitPython** - **Built in RGB NeoPixel LED** - **11 GPIO pins**: - True analog output on one I/O pin - can be used to play 10-bit quality audio clips in Arduino (CircuitPython does not have storage for audio clips) - 9 x 12-bit analog inputs (SDA/SCL do not have analog inputs) - 1 x Optional AREF on A1 - 9 x PWM outputs (A0 is analog out, A1 is not PWM capable) - Hardware I2C port with STEMMA QT plug-n-play connector - Hardware UART - Hardware SPI - Hardware I2S - 6 x Capacitive Touch with no additional components required - 3.3V regulator with [600mA peak output](https://core-electronics.com.au/attachments/localcontent/AP2112_75527108c38.pdf) - Optional SOIC-8 SPI Flash chip on bottom - **Reset switch** for starting your project code over or entering bootloader mode - **USB Type C connector** - **Really really small** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/a/d/ada4600-1.jpg)