Adafruit QT Py – SAMD21 Dev Board with STEMMA QT

• Board Type:Evaluation Platform
• Contents:Board(s)
• Core Processor:ARM® Cortex®-M0
• Mounting Type:Fixed
• Platform:Arduino
• Type:MPU
• Utilized IC / Part:ATSAMD21E18
• Adafruit QT Py – SAMD21 Dev Board with STEMMA QT is a chainable I2C port that can be used with any of our STEMMA QT sensors and accessories. 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.

• 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, we 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 file storage, solder an SOIC SPI flash chip onto the bottom pads.

  Features:

  • Same size, form-factor, and pin-out as Seeed Xiao
  • USB Type C connector – If you have only Micro B cables, this adapter will come in handy!
  • 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
  • Optional SOIC-8 SPI Flash chip on bottom
  • Reset switch for starting your project code over or entering bootloader mode
  • Really really small

  Package Includes:

  1 x Adafruit QT Py – SAMD21 Dev Board with STEMMA QT

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