Arduino - Accelerometer ADXL335

Arduino - Accelerometer ADXL335

 The accelerometer is an analog device used to measure the proper acceleration in the three different axis(x-y-z).

  Materials:

       1. Arduino Uno (from sparkfun)
       2. adxl335 sensor (from sparkfun)

   Wiring:

   1. Connect the VCC to A5.

   2. Connect the GND to A4.

   3. Connect "X" to A3 analogpin.

   4. Connect "Y" to A2 analogpin.

   5. Connect "Z" to A1 analogpin.

        

 Code:

 //Analog read pins

const int groundpin = 18;

const int powerpin = 19;

const int xPin = A3;

const int yPin = A2;

const int zPin = A1;

void setup(){

  Serial.begin(9600);

//analog to gnd & 5v

pinMode(groundpin,OUTPUT);

pinMode(powerpin,OUTPUT);

digitalWrite(groundpin,LOW);

digitalWrite(powerpin,HIGH);

pinMode(xPin, INPUT);

pinMode(yPin, INPUT);

pinMode(zPin, INPUT);

}

 void loop(){

   int x = analogRead(xPin);

 //

 //add a small delay between pin readings.  I read that you should

 //do this but haven't tested the importance

   delay(1);

 //

 int y = analogRead(yPin);

 //

 //add a small delay between pin readings.  I read that you should

 //do this but haven't tested the importance

   delay(1);

 //

 int z = analogRead(zPin);

 //

 //zero_G is the reading we expect from the sensor when it detects

 //no acceleration.  Subtract this value from the sensor reading to

 //get a shifted sensor reading.

 float zero_G = 512.0;

 //

 //scale is the number of units we expect the sensor reading to

 //change when the acceleration along an axis changes by 1G.

 //Divide the shifted sensor reading by scale to get acceleration in Gs.

 float scale = 102.3;

 //

 Serial.print("x: ");

 Serial.print(((float)x - zero_G)/scale);

 Serial.print("\t");

 //

 Serial.print(" | y: ");

 Serial.print(((float)y - zero_G)/scale);

 Serial.print("\t");

 //

 Serial.print(" | z: ");

 Serial.print(((float)z - zero_G)/scale);

 Serial.print("\n");

  delay(100);//just here to slow down the serial output - Easier to read

}

Serial print display

                                                                 Acelerometro ADXL335

El acelerometro es un dispositivo análogo utilizado para medir la acceleración propia en los tres differentes ejes(x-y-z).

   

Materiales:

   1. Arduino Uno (de sparkfun)

   2. Sensor ADXL 335 ( de sparkfun)

 Cableado:

   1. Conecte el VCC a 5V.

   2. Conecte el GND a A4.

   3. Conecte "X'' al puerto análogo A3.

   4. Conecte "Y" al puerto análogo  A2.

   5. Conecte ''Z" al puerto análogo A1.

     

                             

Código:

//Analog read pins

const int groundpin = 18;

const int powerpin = 19;

const int xPin = A3;

const int yPin = A2;

const int zPin = A1;

void setup(){

  Serial.begin(9600);

//analog to gnd & 5v

pinMode(groundpin,OUTPUT);

pinMode(powerpin,OUTPUT);

digitalWrite(groundpin,LOW);

digitalWrite(powerpin,HIGH);

pinMode(xPin, INPUT);

pinMode(yPin, INPUT);

pinMode(zPin, INPUT);

}

 void loop(){

   int x = analogRead(xPin);

 //

 //add a small delay between pin readings.  I read that you should

 //do this but haven't tested the importance

   delay(1);

 //

 int y = analogRead(yPin);

 //

 //add a small delay between pin readings.  I read that you should

 //do this but haven't tested the importance

   delay(1);

 //

 int z = analogRead(zPin);

 //

 //zero_G is the reading we expect from the sensor when it detects

 //no acceleration.  Subtract this value from the sensor reading to

 //get a shifted sensor reading.

 float zero_G = 512.0;

 //

 //scale is the number of units we expect the sensor reading to

 //change when the acceleration along an axis changes by 1G.

 //Divide the shifted sensor reading by scale to get acceleration in Gs.

 float scale = 102.3;

 //

 Serial.print("x: ");

 Serial.print(((float)x - zero_G)/scale);

 Serial.print("\t");

 //

 Serial.print(" | y: ");

 Serial.print(((float)y - zero_G)/scale);

 Serial.print("\t");

 //

 Serial.print(" | z: ");

 Serial.print(((float)z - zero_G)/scale);

 Serial.print("\n");

  delay(100);//just here to slow down the serial output - Easier to read

}

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