5DOF with Arduino Uno

Using Arduino Sensors
1

Hi I am currently working on a project that will take readings from the IMU and transmit them to my computer for further processing. The 5DOF contains an ADXL335 and an IDG500, at the momment I am not really concerned with the Gyro aspect, and just want to focus on getting the accelerometer working properly. Here is a list of the connections:

X-Acc -> A0
Y-Acc -> A1
Z_Acc -> A2
ST -> Unconnected
VRef -> Unconnected
Y-Rate -> A4
x-Rate -> A5
GND -> GND (from Uno)
3.3V -> 3.3V (from Uno)

// these constants describe the pins. They won't change:
const int xpin = A0;                  // x-axis of the accelerometer
const int ypin = A1;                  // y-axis
const int zpin = A2;                  // z-axis (only on 3-axis models)

void setup()
{
  // initialize the serial communications:
  Serial.begin(9600);
}

void loop()
{
  // print the sensor values:
  Serial.print(analogRead(xpin));
  // print a tab between values:
  Serial.print("\t");
  Serial.print(analogRead(ypin));
  // print a tab between values:
  Serial.print("\t");
  Serial.print(analogRead(zpin));
  Serial.println();
  // delay before next reading:
  delay(100);
}

for an output of the serial i am getting:
230 227 228
230 227 229
232 228 228
232 229 229
232 229 231
232 228 230
234 231 230
233 230 231
233 230 231
234 230 229
235 231 231
233 230 231
234 230 231
235 231 231
235 232 231
235 231 232
237 232 231
236 234 233
236 233 233
236 233 233
238 234 232
237 234 234
238 234 234
238 234 233
These numbers don't change when the device is moved or shaken. Do I have something wired incorrectly? Is my IMU broken?
any input is appreciated Thanks!!

2

You're code is broken, you don't want to be using The Arduino Mega address pin numbers (A0..A7), replace this

const int xpin = A0;                  // x-axis of the accelerometer
const int ypin = A1;                  // y-axis
const int zpin = A2;                  // z-axis (only on 3-axis models)

by this:

const int xpin = 0;                  // x-axis of the accelerometer
const int ypin = 1;                  // y-axis
const int zpin = 2;                  // z-axis (only on 3-axis models)