Accellerometer

Accellerometer

Processes an analog Accellerometer (ADXL 335 series) sensor and prints the information to the computer monitor

Accellometer Code

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/*
 ADXL335

 The circuit:
 analog 0: accelerometer self test
 analog 1: z-axis
 analog 2: y-axis
 analog 3: x-axis
 analog 4: ground
 analog 5: vcc

*/

// these constants describe the pins. They won't change:
//const int groundpin = 18;             // analog input pin 4 -- ground
//const int powerpin = 19;              // analog input pin 5 -- voltage
const int xpin = A3;                  // x-axis of the accelerometer
const int ypin = A2;                  // y-axis
const int zpin = A1;                  // z-axis (only on 3-axis models)
int yValue;
int xValue;
int zValue;
void setup() {
Serial.begin(9600);
}

//Explain that acceleration exists even without motion due to gravity (1g acceleration)
//In this program if you tap the sensor in the X,Y or Z direction it will sense it

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void loop() {
  yValue = analogRead(ypin);
  xValue = analogRead(xpin);
  zValue = analogRead(zpin);

  Serial.print(analogRead(xpin));
  Serial.print("\t");

  Serial.print(analogRead(ypin));
  Serial.print("\t");

  Serial.print(analogRead(zpin));
  Serial.println();

  // delay before next reading:
  delay(1000);
}

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Things to do:

1) Build a tilt meter to display X tilt using LEDs
2) Build a tilt meter to display X and Y tilt using LEDs.
3) Use the output of the accelerometer to control a servo motors rotation
4) Use the output of the accelerometer to control a small remote-controlled vehicle