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Adafruit QT Py S3 with 2MB PSRAM WiFi Dev Board with STEMMA QT

Pinout

Logical pinout · physical placement not verified
ADAFRUIT QT PY S3 WITHUSB-C portMI3.3VMOGNDA05VA1BATA2SCLA3SDASTEMMA QTRXReset buttonTXBoot buttonGPIO 0SCK

One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.

  • USB-C port

    USB-C connector used for both powering and programming the board, per Adafruit Learn pinouts.

    Type · USB
  • 3.3V

    Output from the 3.3V regulator, can supply 600 mA peak, per Adafruit Learn pinouts.

    Type · PowerVoltage · 3.3V output
  • GND

    Common ground for power and logic.

    Type · GroundVoltage · 0V
  • 5V

    5V out from USB port; can also be used as protected voltage input with an external diode as described by Adafruit.

    Type · PowerVoltage · 5V
  • BAT

    Back-side battery input pad paired with GND for external battery packs.

    Type · PowerVoltage · 3V to 6V input
  • SCL

    Primary I2C clock pad; not shared by the STEMMA QT connector; no onboard pull-up. Can also be capacitive touch and analogue input.

    Type · I2CVoltage · 3.3V logic
  • SDA

    Primary I2C data pad; not shared by the STEMMA QT connector; no onboard pull-up. Can also be capacitive touch and analogue input.

    Type · I2CVoltage · 3.3V logic
  • RX

    UART receive pin, connect to TX on the sensor or breakout.

    Type · UARTVoltage · 3.3V logic
  • TX

    UART transmit pin, connect to RX on the sensor or breakout; can do capacitive touch.

    Type · UARTVoltage · 3.3V logic
  • SCK

    SPI clock pin on the ESP32-S3 high-speed peripheral.

    Type · SPIVoltage · 3.3V logic
  • MI

    SPI Microcontroller In / Sensor Out pin.

    Type · SPIVoltage · 3.3V logic
  • MO

    SPI Microcontroller Out / Sensor In pin.

    Type · SPIVoltage · 3.3V logic
  • A0-A3

    Four analogue-capable GPIO pads; A0/A1 are ADC2, A2/A3 are ADC1.

    Type · AnalogVoltage · 3.3V logic
  • STEMMA QT

    JST SH 4-pin STEMMA QT connector carrying second I2C interface SCL1, SDA1, 3.3V, and GND.

    Type · I2CVoltage · 3.3V
  • Reset button

    Restarts the board and helps enter the UF2 bootloader.

    Type · Control
  • Boot buttonGPIO 0

    Used for ROM bootloader mode and can also be read as GPIO 0 input with pull-up.

    Type · GPIO, ControlVoltage · 3.3V logic

Start wiring

USB · 3.3 V

Confirm the data interface matches your host board.

Module pins: 3.3V, 5V, BAT, GND, SCL, SDA, RX, TX. Schematik maps them to your board in the app.

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