ADXL326 Accelerometer Questions

[Blake81]

I'm trying to get this accelerometer working. I'm going to be using it with the GPS logger in a high-altitude balloon. I have one problem and a question. When I run this code, I get values of 14, 15, and 16 for X Y and Z, respectively. Does it make sense to get those values? Also, the problem is that, when I run this code, the values don't change. Can you see why this is happening? Thanks.

Code: Select all

const int xInput = A0;
    const int yInput = A1;
    const int zInput = A2;
     
    void setup()
    {
    analogReference(EXTERNAL);
    Serial.begin(9600);
    }
     
    void loop()
    {
    int xRaw = xInput;
    int yRaw = yInput;
    int zRaw = zInput;
   
    Serial.print("X: ");
    Serial.print(xRaw);
    Serial.print(", Y: ");
    Serial.print(yRaw);
    Serial.print(", Z: ");
    Serial.print(zRaw);
String AccValues = ",Accel=";
AccValues = AccValues + xRaw + yRaw + zRaw;
Serial.print(AccValues);
    }

[adafruit_support_bill]

Your loop isn't reading from the sensor. You are just assigning x, y & z raw to some variables that never change.

Code: Select all

    int xRaw = xInput;
    int yRaw = yInput;
    int zRaw = zInput;


You need to read from the pins that your ADX326 is connected to. To minimize noise, use the "readAxis()" function from the calibration sketch in the tutorial for your readings. http://learn.adafruit.com/adafruit-anal ... rogramming

Code: Select all

int xRaw = ReadAxis(xInput);
int yRaw = ReadAxis(yInput);
int zRaw = ReadAxis(zInput);