Easy to Use Accelerometer Module – ADXL345

				
					#include <Wire.h>  // Wire library - used for I2C communication
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>//OLED library

Adafruit_SSD1306 display(128,64, &Wire, -1);//Set the screen size of OLED

int ADXL345 = 0x53;         // The ADXL345 sensor I2C address
float X_out, Y_out, Z_out;  // Outputs
void setup() {
  Serial.begin(9600);
  Wire.begin();             // Initiate the Wire library
  // Set ADXL345 in measuring mode
  Wire.beginTransmission(ADXL345); // Start communicating with the device
  Wire.write(0x2D); // Access/ talk to POWER_CTL Register - 0x2D
  // Enable measurement
  Wire.write(8); // (8dec -> 0000 1000 binary) Bit D3 High for measuring enable
  Wire.endTransmission();
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);//Initialize OLED and set IIC communication address
  delay(10);
}
void loop() {
  Wire.beginTransmission(ADXL345);
  Wire.write(0x32); // Start with register 0x32 (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(ADXL345, 6, true); // Read 6 registers total, each axis value is stored in 2 registers
  X_out = ( Wire.read()| Wire.read() << 8); // X-axis value
  X_out = X_out/256; //For a range of +-2g, we need to divide the raw values by 256, according to the datasheet
  Y_out = ( Wire.read()| Wire.read() << 8); // Y-axis value
  Y_out = Y_out/256;
  Z_out = ( Wire.read()| Wire.read() << 8); // Z-axis value
  Z_out = Z_out/256;
  Serial.print("Xa= ");
  Serial.print(X_out);
  Serial.print("   Ya= ");
  Serial.print(Y_out);
  Serial.print("   Za= ");
  Serial.println(Z_out);
  display.clearDisplay();//Clear screen
  display.setTextColor(WHITE);//Setting text color, monochrome OLED is invalid, but must have
  display.setTextSize(2);//Set text size
  display.setCursor(0, 0);
  display.print("X: ");
  display.print(X_out);
  display.setCursor(0, 20);
  display.print("Y: ");
  display.print(Y_out);
  display.setCursor(0, 40);
  display.print("Z: ");
  display.print(Z_out);
  display.display();//Execute Display
  delay(100);
}