Adafruit Wii Nunchuck Breakout Adapter

Adafruit Industries, MIT

Dig out that old Wii controller and use it as a sleek controller for your next robot if you like. The Adafruit Adafruit Wii Nunchuck Breakout Adapter fits snugly into the Wii connector and performs the level shifting and power regulation needed to use the controller with any…

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

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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