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  1. Parts
  2. /Motors & actuators
  3. /Robotics & mechanics

Wii Nunchuck Breakout Adapter

OverviewPinoutWiringAlternatesRelated groups
Adafruit Wii Nunchuck Breakout Adapter generated catalogue visual
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STEPSTL

Breakout adapter that accepts a Wii Nunchuck connector and provides level-shifted I2C signals plus regulated power for use with 3.3V or 5V microcontrollers. Exposes the joystick, accelerometer, and two buttons over I2C.

Offers

  • Adafruit$2.95
  • ?DigiKey$2.95

Offers

  • Adafruit$2.95
  • ?DigiKey$2.95

Pinout

  • VIN

    Power input for the breakout; Adafruit Learn says to give it the same power as the microcontroller logic level, for example 5V with Arduino.

    Type · powerVoltage · matches host logic supply, typically 3V to 5V
  • 3V

    3.3V output from the on-board voltage regulator; Adafruit says up to 100mA can be drawn.

    Type · powerVoltage · 3.3V output, up to 100mA
  • GND

    Common ground for power and logic.

    Type · groundVoltage · 0V
  • SCL

    I2C clock line; level shifted for 3V to 5V logic with a 10K pull-up according to Adafruit Learn.

    Type · signalVoltage · 3V to 5V logic
  • SDA

    I2C data line; level shifted for 3V to 5V logic with a 10K pull-up according to Adafruit Learn.

    Type · signalVoltage · 3V to 5V logic
  • STEMMA QT

    STEMMA QT I2C connector for connecting to STEMMA QT boards/accessories; shares the board I2C and power contract.

    Type · connectorVoltage · 3V to 5V logic supported by level shifting on I2C pins
  • Wii Nunchuck connector

    Socket/cutout for a Wii Nunchuck controller; Adafruit states Wii controllers use a standard I2C interface and the notched side goes on the side marked Notch Up.

    Type · connectorVoltage · I2C interface powered through breakout
PinPositionTypeFunctionVoltage
VINpowerPower input for the breakout; Adafruit Learn says to give it the same power as the microcontroller logic level, for example 5V with Arduino.matches host logic supply, typically 3V to 5V
3Vpower3.3V output from the on-board voltage regulator; Adafruit says up to 100mA can be drawn.3.3V output, up to 100mA
GNDgroundCommon ground for power and logic.0V
SCLsignalI2C clock line; level shifted for 3V to 5V logic with a 10K pull-up according to Adafruit Learn.

Start wiring

I2S · I2C · SPI · matches host logic supply, typically 3V to 5V · 3.3V output, up to 100mA

Confirm the data interface matches your host board.

Module pins: VIN, 3V, GND, SCL, SDA. Schematik maps them to your board in the app.

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Parts tray full · 5 max · remove a part to add another
3V to 5V logic
SDAsignalI2C data line; level shifted for 3V to 5V logic with a 10K pull-up according to Adafruit Learn.3V to 5V logic
STEMMA QTconnectorSTEMMA QT I2C connector for connecting to STEMMA QT boards/accessories; shares the board I2C and power contract.3V to 5V logic supported by level shifting on I2C pins
Wii Nunchuck connectorconnectorSocket/cutout for a Wii Nunchuck controller; Adafruit states Wii controllers use a standard I2C interface and the notched side goes on the side marked Notch Up.I2C interface powered through breakout