A curated list of awesome Adafruit QT Py and Seeed Studio XIAO guides, hardware, software and resources.
Adafruit QT Py and Seeed Studios XIAO are microcontroller centered electronics in a small form factor. With USB connectivity on such a small package, QT Py and XIAO provide robust capabilities in a very small space.
- Typical Specifications
- Introduction and Social Media
- Community
- Processor Boards
- Add-on Boards
- Accessories
- In the news
- Videos
- Development
- Contributing
- Dimensions: 21.8mm x 17.8mm x 5.8mm / 0.9" x 0.7" x 0.2"
- Board pins: 14 (7x2) on a 0.1 inch spacing
- USB: USB-C Connector
- Approximate weight (depends on particular board): 2.2g / 0.1oz
- About QT Py Video Short
- Original Tutorial on the Adafruit QT Py
- Adafruit Learning System Tutorials with QT Py
- Adafruit Blog - posts on QT Py
- Seeed Studio Blog - posts on XIAO
- Seeed Studio XIAO Introduction
- Getting Started with Seeed Studio XIAO SAMD21
- /r/Adafruit QT Py Reddit
- QT Py on X/Twitter
- Seeed XIAO on X/Twitter
- Adafruit Discord - Search on QT Py or XIAO
- Seeed Studio Forum on XIAO
- Adafruit Forums - Use Other Adafruit Boards for hardware, CircuitPython or Arduino
| Name | Processor | CircuitPython | Arduino | Wireless | Features |
|---|---|---|---|---|---|
| QT Py RP2040 | RP2040 | Yes | Yes | No | Stemma QT I2C Port |
| QT Py ESP32 Pico | ESP32 Pico V3 02 | MicroPython | Yes | WiFi+BLE+BT | 8MB Flash, 2MB PSRAM, Stemma QT Port |
| QT Py ESP32-C3 WiFi | ESP32-C3 | MicroPython | Yes | WiFi | Stemma QT I2C Port |
| QT Py ESP32-S2 | ESP32-S2 | Yes | Yes | WiFi | 4MB Flash, 2MB PSRAM, Stemma QT I2C, chip antenna |
| QT Py ESP32-S2 | ESP32-S2 | Yes | Yes | WiFi | 4MB Flash, 2MB PSRAM, Stemma QT I2C, uFL antenna connector |
| QT Py S3 | ESP32-S3 | Yes | Yes | WiFi+BLE | 2MB PSRAM, Stemma QT Port |
| QT Py ESP32-S3 | ESP32-S3 | Yes | Yes | WiFi+BLE | 8MB Flash, NO PSRAM, Stemma QT |
| QT Py - SAMD21 | ATSAMD21E18 | Yes | Yes | No | NeoPixel LED, Stemma QT I2C Port |
| CH552 QT Py | CH552 | No | Yes | No | NeoPixel LED, Stemma QT I2C Port |
| Name | Processor | CircuitPython | Arduino | Wireless | Features |
|---|---|---|---|---|---|
| XIAO ESP32C3 | ESP32-C3 | Yes | Yes | WiFi | u.FL Antenna |
| XIAO ESP32C6 | ESP32-C6 | No | Yes | WiFi6+BLE+802.15.4 | Zigbee/Thread Support |
| XIAO nRF52840 | nRF52840 | Yes | Yes | WiFi+BLE | Chip Antenna |
| XIAO nRF52840 Sense | nRF52840 | Yes | Yes | WiFi+BLE | Microphone and 6-DOF IMU |
| XIAO RP2040 | RP2040 | Yes | Yes | No | NeoPixel LED |
| XIAO RP2350 | RP2350A | Yes | Yes | No | NeoPixel LED |
| XIAO SAMD21 | ATSAMD21G18 | Yes | Yes | No | |
| XIAO ESP32S3 | ESP32-S3 | No | Yes | WiFi+BLE | Chip + u.FL Antenna |
| XIAO ESP32S3 Sense | ESP32-S3 | No | Yes | WiFi+BLE | Camera, Microphone, u.FL Antenna |
| XIAO MG24 | EFR32MG24 | No | Yes | BLE | u.FL Antenna |
| XIAO MG24 Sense | EFR32MG24 | No | Yes | BLE | Microphone, 6-DOF IMU, u.FL Antenna |
| XIAO RA4M1 | RA4M1 | No | Yes | No |
| Name | Processor | CircuitPython | Arduino | Wireless | Features |
|---|---|---|---|---|---|
| Phyx LANA TNY | WCH CH32V203 | No | Yes | No | NeoPixel, Stemma QT/Qwiic |
| Phyx RICK TNY | RP2350A | Yes | Yes | No | NeoPixel |
Adafruit calls their QT Py size add-on boards "BFF"
| Company | Name | Features |
|---|---|---|
| Adafruit | EYESPI BFF for QT Py or Xiao | 18 Pin EYESPI FPC Connector for connecting displays |
| Adafruit | microSD Card BFF Add-On for QT Py and Xiao | Provides a microSD card slot |
| Adafruit | Audio BFF Add-on for QT Py and Xiao | MAX98357 3 watt audio amplifier, microSD slot, connector for speaker |
| Adafruit | NeoKey BFF for Mechanical Key Add-On | Add a Cherry MX compatible switch |
| Adafruit | BNO055 + BMP280 BFF Add-On for QT Py | 9 degree-of-freedom (9DoF) motion plus pressure/altitude sensing |
| Adafruit | DC Power BFF Add-On for QT Py | Power a QT Py or XIAO up to 20 volts DC |
| Adafruit | CAN Bus BFF Add-On for QT Py | MCP26525 CAN controller+transceiver and connector |
| Adafruit | NeoPixel Driver BFF Add-On for QT Py and Xiao | Level shift signal to 5V for NeoPixel LED driving |
| Adafruit | I2S Amplifier BFF Add-On for QT Py and Xiao | MAX98357 audio amplifier and picoblade speaker connector |
| Adafruit | 5x5 NeoPixel Grid BFF Add-On for QT Py and Xiao | 25 (5x5) small RGB LEDs |
| Seeed Studio | Expansion Board Base for XIAO | Grove OLED - IIC, Uart, Analog/Digital |
| Seeed Studio | CAN Bus Breakout Board for XIAO and QT Py | MCP2515 controller, SN65HVD230 transceiver chip, terminal blocks |
| Seeed Studio | Grove Base for XIAO | 4/8 Grove ports + embedded battery management chip |
| Seeed Studio | Round Display for XIAO - 1.28-inch round touch screen | 240×240 resolution, 65k colors, RTC, charge IC, TF card slot |
| Seeed Studio | 6x10 RGB MATRIX for XIAO | 60 LEDs onboard, 1m*1m WS2812B LED |
| Seeed Studio | 24GHz mmWave Sensor for XIAO | Human Static Presence |
| Seeed Studio | ePaper Breakout Board | 24-pin FPC connection, addt'l 8-pin 2.54 header |
| Seeed Studio | GNSS add on Module for XIAO | L76K GNSS Module, global tracking GPS, BeiDou, GLONASS, and QZSS |
| Evil Genius Labs | One Inch Fibonacci64 | 64 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | One Inch Fibonacci32 | 32 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Mega CycloHex | Hexagonally-nested rings with 228 RGB LEDs, 6 touch pads via an Adafruit QT Py SAMD21 |
| Evil Genius Labs | CycloHex | Hexagonally-nested rings with 228 RGB LEDs, 6 touch pads via an Adafruit QT Py SAMD21 |
| Evil Genius Labs | Fibonacci64 Flower | 64 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Fibonacci64 50mm Goggle Lens | 50mm circular disc with 64 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Fibonacci182 Card | 182 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Fibonacci64 Micro HDR | 64 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Fibonacci64 Micro | 64 RGB LEDs in a Fibonacci distribution |
| Evil Genius Labs | Fibonacci64 Nano | 64 RGB LEDs in a Fibonacci distribution |
| Cyborg5 / OSH Park | IRHat2 | IoT Infrared Remote using Raspberry Pi Zero W and Adafruit QT Py Hat described here |
| SparkFun | WVR Audio Development Board - USB Host Version | A sample player powered by an ESP32. XIAO is USB Host |
| Company | Name | Features |
|---|---|---|
| Printables | Case for Adafruit QT PY RP2040 and Seeed XIAO RP2040 | 3D printable case |
| Solder Party | Xiao/QTPy FlexyPin Adapter | A breadboard adapter that doesn't require headers to be soldered to the QtPy |
- Tom's Hardware Best RP2040 Boards 2024 - Adafruit QT Py Rp2040 and Seeed XIAO RP2040, April 3, 2024
- Adafruit QT Py RP2040 Review: A tiny board for great projects - by Les Pounder, April 18, 2021
- hackster.io QT Py Unboxing
- QT Py Videos on YouTube
- Adafruit QT Py - tiny but mighty
- First Look at the Adafruit QT Py RP2040 - Fantastic Tiny RP2040 Board
- Adafruit QT PI SAMD21 Board
- The first ESP32-C3 QT Py off the machine line
- Seeeduino XIAO the Smallest Arduino, Getting Started Tutorial, Pinout, specifications, & Arduino IDE
- ESP32-C3 XIAO, the Smallest ESP32 Board, ESP32-C3 by Seeed Studio, XIAO ESP32-C3
- XIAO ESP32C6 Getting Started Tutorial, Seeed Studio, Smallest ESP32
- Seeeduino XIAO - 32-bit Arduino-compatible Microcontroller
- Unboxing and testing the Seeedstudio XIAO nerdhut.de
- Seeed XIAO RP2040
Contributions and suggestions are always welcome! Please make GitHub pull requests to modify Awesome QY Py.
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