Hello everyone! I’m making a little project based on Arduino. I’ll need to use a Wii Nunchuck to control servo motors. I can move 2 servos with the accelerometer of the Nunchuck (servo1 is axis X, servo2 is axis Y). THis works fine, but it’s not what I need. I need to move 1 servo with axis X of the accelermoeter of the Nunchuck, and the other servo with a button of the Nunchuck (I mean that if you press the button, the servo rotates 180 degrees. I don’t care if it’s button C or Z). Sorry for my bad english 
PD: Here’s the code I used to move 2 servos with the accelerometer:
#include <Servo.h>
Servo servo1;
Servo servo2;
#include <Wire.h>
#define ZEROX 530
#define ZEROY 530
#define ZEROZ 530
#define WII_NUNCHUK_I2C_ADDRESS 0x52
int counter;
uint8_t data[6];
void setup()
{
servo1.attach(10);
servo2.attach(11);
Wire.begin();
Wire.beginTransmission(WII_NUNCHUK_I2C_ADDRESS);
Wire.write(0xF0);
Wire.write(0x55);
Wire.endTransmission();
Wire.beginTransmission(WII_NUNCHUK_I2C_ADDRESS);
Wire.write(0xFB);
Wire.write(0x00);
Wire.endTransmission();
}
void loop()
{
Wire.requestFrom(WII_NUNCHUK_I2C_ADDRESS, 6);
counter = 0;
while(Wire.available())
{
data[counter++] = Wire.read();
}
Wire.beginTransmission(WII_NUNCHUK_I2C_ADDRESS);
Wire.write(0x00);
Wire.endTransmission();
if(counter >= 5)
{
double accelX = ((data[2] << 2) + ((data[5] >> 2) & 0x03) - ZEROX);
double accelY = ((data[3] << 2) + ((data[5] >> 4) & 0x03) - ZEROY);
double accelZ = ((data[4] << 2) + ((data[5] >> 6) & 0x03) - ZEROZ);
int value = constrain(accelY, -180, 180);
value = map(value, -180, 180, 0, 180);
servo1.write(value);
value = constrain(accelX, -180, 180);
value = map(value, -180, 180, 0, 180);
servo2.write(value);
delay(20);
}
}