ADXL345 Triple Axis Accelerometer Breakout - Revision history

Admin at 01:39, 10 December 2012

2012-12-10T01:39:29Z

← Older revision		Revision as of 01:39, 10 December 2012
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	==Example code==		==Example code==
			For Arduino 1.0+
	#include <Wire.h> // I2C library, gyroscope		#include <Wire.h> // I2C library, gyroscope
	// Accelerometer ADXL345		// Accelerometer ADXL345

Admin: /* Example code */

2012-12-10T01:37:42Z

Example code

← Older revision		Revision as of 01:37, 10 December 2012
Line 26:		Line 26:

	==Example code==		==Example code==
	#include <Wire.h> // I2C library, gyroscope		#include <Wire.h> // I2C library, gyroscope
	// Accelerometer ADXL345		// Accelerometer ADXL345
	#define ACC (0xA7>>1) //ADXL345 ACC address		#define ACC (0xA7>>1) //ADXL345 ACC address
	#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)		#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)
	void initAcc() {		void initAcc() {
	//Turning on the ADXL345		//Turning on the ADXL345
	writeTo(ACC, 0x2D, 1<<3);		writeTo(ACC, 0x2D, 1<<3);
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	writeTo(ACC, 0x2C, 0x09);		writeTo(ACC, 0x2C, 0x09);
	//by default the device is in +-2g range reading		//by default the device is in +-2g range reading
	}		}
	void getAccelerometerData(int * result) {		void getAccelerometerData(int * result) {
	int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345		int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345
	byte buff[A_TO_READ];		byte buff[A_TO_READ];
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	result[1] = (((int)buff[3])<< 8) \| buff[2];		result[1] = (((int)buff[3])<< 8) \| buff[2];
	result[2] = (((int)buff[5]) << 8) \| buff[4];		result[2] = (((int)buff[5]) << 8) \| buff[4];
	}		}
	void setup()		void setup()
	{		{
	Serial.begin(9600);		Serial.begin(9600);
	Wire.begin();		Wire.begin();
	initAcc();		initAcc();
	}		}
	void loop()		void loop()
	{		{
	int hx,hy,hz;		int hx,hy,hz;
	int acc[3];		int acc[3];
	getAccelerometerData(acc);		getAccelerometerData(acc);
	hx = acc[0];		hx = acc[0];
	hy = acc[1];		hy = acc[1];
	hz = acc[2];		hz = acc[2];
	Serial.print(" X=");		Serial.print(" X=");
	Serial.print(hx);		Serial.print(hx);
	Serial.print(" Y=");		Serial.print(" Y=");
	Serial.print(hy);		Serial.print(hy);
	Serial.print(" Z=");		Serial.print(" Z=");
	Serial.println(hz);		Serial.println(hz);
	delay(50);		delay(50);
	}		}
	//---------------- Functions		//---------------- Functions
	//Writes val to address register on ACC		//Writes val to address register on ACC
	void writeTo(int DEVICE, byte address, byte val) {		void writeTo(int DEVICE, byte address, byte val) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
	Wire.write(address); // send register address		Wire.write(address); // send register address
	Wire.write(val); // send value to write		Wire.write(val); // send value to write
	Wire.endTransmission(); //end transmission		Wire.endTransmission(); //end transmission
	}		}
	//reads num bytes starting from address register on ACC in to buff array		//reads num bytes starting from address register on ACC in to buff array
	void readFrom(int DEVICE, byte address, int num, byte buff[]) {		void readFrom(int DEVICE, byte address, int num, byte buff[]) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
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	}		}
	Wire.endTransmission(); //end transmission		Wire.endTransmission(); //end transmission
	}		}

	==How to buy==		==How to buy==
	Click here to buy [http://www.geeetech.com/adxl345triple-axis-accelerometer-breakout-p-384.html ADXL345 3-Axis Accelerometer Breakout]		Click here to buy [http://www.geeetech.com/adxl345triple-axis-accelerometer-breakout-p-384.html ADXL345 3-Axis Accelerometer Breakout]

Admin: /* Example code */

2012-12-10T01:32:21Z

Example code

← Older revision		Revision as of 01:32, 10 December 2012
Line 26:		Line 26:

	==Example code==		==Example code==
	#include <Wire.h> // I2C library, gyroscope		#include <Wire.h> // I2C library, gyroscope
	// Accelerometer ADXL345		// Accelerometer ADXL345
	#define ACC (0xA7>>1) //ADXL345 ACC address		#define ACC (0xA7>>1) //ADXL345 ACC address
	#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)		#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)
	void initAcc() {		void initAcc() {
	//Turning on the ADXL345		//Turning on the ADXL345
	writeTo(ACC, 0x2D, 1<<3);		writeTo(ACC, 0x2D, 1<<3);
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	writeTo(ACC, 0x2C, 0x09);		writeTo(ACC, 0x2C, 0x09);
	//by default the device is in +-2g range reading		//by default the device is in +-2g range reading
	}		}
	void getAccelerometerData(int * result) {		void getAccelerometerData(int * result) {
	int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345		int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345
	byte buff[A_TO_READ];		byte buff[A_TO_READ];
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	result[1] = (((int)buff[3])<< 8) \| buff[2];		result[1] = (((int)buff[3])<< 8) \| buff[2];
	result[2] = (((int)buff[5]) << 8) \| buff[4];		result[2] = (((int)buff[5]) << 8) \| buff[4];
	}		}
	void setup()		void setup()
	{		{
	Serial.begin(9600);		Serial.begin(9600);
	Wire.begin();		Wire.begin();
	initAcc();		initAcc();
	}		}
	void loop()		void loop()
	{		{
	int hx,hy,hz;		int hx,hy,hz;
	int acc[3];		int acc[3];
	getAccelerometerData(acc);		getAccelerometerData(acc);
	hx = acc[0];		hx = acc[0];
	hy = acc[1];		hy = acc[1];
	hz = acc[2];		hz = acc[2];
	Serial.print(" X=");		Serial.print(" X=");
	Serial.print(hx);		Serial.print(hx);
	Serial.print(" Y=");		Serial.print(" Y=");
	Serial.print(hy);		Serial.print(hy);
	Serial.print(" Z=");		Serial.print(" Z=");
	Serial.println(hz);		Serial.println(hz);
	delay(50);		delay(50);
	}		}
	//---------------- Functions		//---------------- Functions
	//Writes val to address register on ACC		//Writes val to address register on ACC
	void writeTo(int DEVICE, byte address, byte val) {		void writeTo(int DEVICE, byte address, byte val) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
	Wire.write(address); // send register address		Wire.write(address); // send register address
	Wire.write(val); // send value to write		Wire.write(val); // send value to write
	Wire.endTransmission(); //end transmission		Wire.endTransmission(); //end transmission
	}		}
	//reads num bytes starting from address register on ACC in to buff array		//reads num bytes starting from address register on ACC in to buff array
	void readFrom(int DEVICE, byte address, int num, byte buff[]) {		void readFrom(int DEVICE, byte address, int num, byte buff[]) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC

Admin: /* Example code */

2012-12-10T01:31:09Z

Example code

← Older revision		Revision as of 01:31, 10 December 2012
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	#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)		#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)
	void initAcc() {		void initAcc() {
	//Turning on the ADXL345		//Turning on the ADXL345
	writeTo(ACC, 0x2D, 1<<3);		writeTo(ACC, 0x2D, 1<<3);
	writeTo(ACC, 0x31, 0x0B);		writeTo(ACC, 0x31, 0x0B);
	writeTo(ACC, 0x2C, 0x09);		writeTo(ACC, 0x2C, 0x09);
	//by default the device is in +-2g range reading		//by default the device is in +-2g range reading
	}		}
	void getAccelerometerData(int * result) {		void getAccelerometerData(int * result) {
	int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345		int regAddress = 0x32; //first axis-acceleration-data register on the ADXL345
	byte buff[A_TO_READ];		byte buff[A_TO_READ];
	readFrom(ACC, regAddress, A_TO_READ, buff); //read the acceleration data from the ADXL345		readFrom(ACC, regAddress, A_TO_READ, buff); //read the acceleration data from the ADXL345
	//each axis reading comes in 10 bit resolution, ie 2 bytes. Least Significat Byte first!!		//each axis reading comes in 10 bit resolution, ie 2 bytes. Least Significat Byte first!!
	//thus we are converting both bytes in to one int		//thus we are converting both bytes in to one int
	result[0] = (((int)buff[1]) << 8) \| buff[0];		result[0] = (((int)buff[1]) << 8) \| buff[0];
	result[1] = (((int)buff[3])<< 8) \| buff[2];		result[1] = (((int)buff[3])<< 8) \| buff[2];
	result[2] = (((int)buff[5]) << 8) \| buff[4];		result[2] = (((int)buff[5]) << 8) \| buff[4];
	}		}
	void setup()		void setup()
	{		{
	Serial.begin(9600);		Serial.begin(9600);
	Wire.begin();		Wire.begin();
	initAcc();		initAcc();
	}		}
	void loop()		void loop()
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	//Writes val to address register on ACC		//Writes val to address register on ACC
	void writeTo(int DEVICE, byte address, byte val) {		void writeTo(int DEVICE, byte address, byte val) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
	Wire.~~send~~(address); // send register address		Wire.write(address); // send register address
	Wire.~~send~~(val); // send value to write		Wire.write(val); // send value to write
	Wire.endTransmission(); //end transmission		Wire.endTransmission(); //end transmission
	}		}
	//reads num bytes starting from address register on ACC in to buff array		//reads num bytes starting from address register on ACC in to buff array
	void readFrom(int DEVICE, byte address, int num, byte buff[]) {		void readFrom(int DEVICE, byte address, int num, byte buff[]) {
	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
	Wire.~~send~~(address); //sends address to read from		Wire.write(address); //sends address to read from
	Wire.endTransmission(); //end transmission		Wire.endTransmission(); //end transmission

	Wire.beginTransmission(DEVICE); //start transmission to ACC		Wire.beginTransmission(DEVICE); //start transmission to ACC
	Wire.requestFrom(DEVICE, num); // request 6 bytes from ACC		Wire.requestFrom(DEVICE, num); // request 6 bytes from ACC
	int i = 0;		int i = 0;
	while(Wire.available()) //ACC may send less than requested (abnormal)		while(Wire.available()) //ACC may send less than requested (abnormal)
	{		{
	buff[i] = Wire.~~receive~~(); // receive a byte		buff[i] = Wire.read(); // receive a byte
	i++;		i++;
	}
	~~Wire.endTransmission(); //end transmission~~
	}		}
			Wire.endTransmission(); //end transmission
			}

	==How to buy==		==How to buy==
	Click here to buy [http://www.geeetech.com/adxl345triple-axis-accelerometer-breakout-p-384.html ADXL345 3-Axis Accelerometer Breakout]		Click here to buy [http://www.geeetech.com/adxl345triple-axis-accelerometer-breakout-p-384.html ADXL345 3-Axis Accelerometer Breakout]

Admin: /* Usage */

2012-09-01T02:40:52Z

Usage

← Older revision		Revision as of 02:40, 1 September 2012
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	[[File:345 wiring1.jpg\|500px]]		[[File:345 wiring1.jpg\|500px]]
	[[File:ADX ~~table~~.jpg]]		[[File:ADX table123.jpg]]

	==Example code==		==Example code==

Admin: /* Usage */

2012-09-01T02:38:04Z

Usage

← Older revision		Revision as of 02:38, 1 September 2012
Line 22:		Line 22:
	Arduino should be connected to the pins on the accelerometer:		Arduino should be connected to the pins on the accelerometer:

	[[~~File：345~~ wiring1.jpg\|500px]]		[[File:345 wiring1.jpg\|500px]]
	[[File:ADX table.jpg]]		[[File:ADX table.jpg]]

Admin: /* Usage */

2012-09-01T02:37:52Z

Usage

← Older revision		Revision as of 02:37, 1 September 2012
Line 22:		Line 22:
	Arduino should be connected to the pins on the accelerometer:		Arduino should be connected to the pins on the accelerometer:

	[[~~File345~~ wiring1.jpg\|500px]]		[[File：345 wiring1.jpg\|500px]]
	[[File:ADX table.jpg]]		[[File:ADX table.jpg]]

Admin: /* Usage */

2012-09-01T02:37:35Z

Usage

← Older revision		Revision as of 02:37, 1 September 2012
Line 22:		Line 22:
	Arduino should be connected to the pins on the accelerometer:		Arduino should be connected to the pins on the accelerometer:

	[[~~File:345 wiring~~.jpg\|500px]]		[[File345 wiring1.jpg\|500px]]
	[[File:ADX table.jpg]]		[[File:ADX table.jpg]]

Admin: /* Example code */

2012-08-23T06:14:59Z

Example code

← Older revision		Revision as of 06:14, 23 August 2012
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	#include <Wire.h> // I2C library, gyroscope		#include <Wire.h> // I2C library, gyroscope
	// Accelerometer ADXL345		// Accelerometer ADXL345
	#define ACC (~~0x1A~~>>7) //ADXL345 ACC address		#define ACC (0xA7>>1) //ADXL345 ACC address
	#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)		#define A_TO_READ (6) //num of bytes we are going to read each time (two bytes for each axis)
	void initAcc() {		void initAcc() {

Admin at 08:59, 9 August 2012

2012-08-09T08:59:20Z

← Older revision		Revision as of 08:59, 9 August 2012
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	*I/O voltage range: 1.7 V to VS		*I/O voltage range: 1.7 V to VS
	*SPI (3- and 4-wire) and I2C digital interfaces		*SPI (3- and 4-wire) and I2C digital interfaces

			==Document==
			[http://www.geeetech.com/Documents/ADXL345%20Datasheet.pdf ADXL345 Datasheet]

	==Usage==		==Usage==
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	[[File:ADX table.jpg]]		[[File:ADX table.jpg]]

	~~==Document==~~
	~~[http://www.geeetech.com/Documents/ADXL345%20Datasheet.pdf ADXL345 Datasheet]~~
	==Example code==		==Example code==
	#include <Wire.h> // I2C library, gyroscope		#include <Wire.h> // I2C library, gyroscope