QT Py

• 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
• 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

CircuitPython

• QT Py Haxpress used with 2MB Flash EEPROM

Flash EEPROM 2 MB

• Adafruit QT Py page