This is the latest in a long, proven line of analog sensors - the holy grail of accelerometers. The ADXL335 is a triple axis accelerometer with extremely low noise and power consumption - only 320uA! The sensor has a full sensing range of +/-3g. There is no on-board regulation, provided power should be between 1.8 and 3.6VDC. Dimensions: 0.7x0.7" Hooking it Up: Here is the guide that illustrates how to connect an Arduino to the ADXL345 breakout board. The following is a table describing which pins on the Arduino should be connected to the pins on the accelerometer: Arduino Pin ADXL345 Pin 0 Z 1 Y 2 X 3V3 VCC Gnd GND Test Code: //Analog read pinsconst int xPin = 0;const int yPin = 1;const int zPin = 2;//The minimum and maximum values that came from//the accelerometer while standing still//You very well may need to change theseint minVal =270;int maxVal =440;//to hold the caculated valuesdouble x;double y;double z;void setup(){ Serial.begin(9600);}void loop(){ //read the analog values from the accelerometer int xRead = analogRead(xPin); int yRead = analogRead(yPin); int zRead = analogRead(zPin); //convert read values to degrees -90 to 90 - Needed for atan2 int xAng = map(xRead, minVal, maxVal, -90, 90); int yAng = map(yRead, minVal, maxVal, -90, 90); int zAng = map(zRead, minVal, maxVal, -90, 90); //Caculate 360deg values like so: atan2(-yAng, -zAng) //atan2 outputs the value of -π to π (radians) //We are then converting the radians to degrees x = RAD_TO_DEG * (atan2(-yAng, -zAng) + PI); y = RAD_TO_DEG * (atan2(-xAng, -zAng) + PI); z = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI); //Output the caculations Serial.print("x: "); Serial.print(x); Serial.print(" | y: "); Serial.print(y); Serial.print(" | z: "); Serial.println(z); delay(100);//just here to slow down the serial output - Easier to read}
