KE0055 keyes ADXL345加速度传感器(焊盘孔) 红色 环保

  传感器系列

KE0055 (1)

1. 概述

本传感器主要由ADXL345等组成。ADXL345是一款小巧纤薄的低功耗三轴加速度计,它的分辨率为13位,测量范围为±16 g,数字输出数据为 16 位二进制补码格式。它支持IIC和SPI的通信方式。传感器自带4个定位孔,方便你将传感器固定在其他设备。

2. 规格参数

工作电压:3.3V/5V(DC)

通信方式:IIC/SPI 通信协议

测量范围:±16g

重量:2.7g

3. 连接图

KE0055

4. 测试代码

#include <Wire.h>

// Registers for ADXL345

#define ADXL345_ADDRESS (0xA6 >> 1) // address for device is 8 bit but shift to the

// right by 1 bit to make it 7 bit because the

// wire library only takes in 7 bit addresses

#define ADXL345_REGISTER_XLSB (0x32)

int accelerometer_data[3];

// void because this only tells the cip to send data to its output register

// writes data to the slave’s buffer

void i2c_write(int address, byte reg, byte data) {

// Send output register address

Wire.beginTransmission(address);

// Connect to device

Wire.write(reg);

// Send data

Wire.write(data); //low byte

Wire.endTransmission();

}

// void because using pointers

// microcontroller reads data from the sensor’s input register

void i2c_read(int address, byte reg, int count, byte* data) {

// Used to read the number of data received

int i = 0;

// Send input register address

Wire.beginTransmission(address);

// Connect to device

Wire.write(reg);

Wire.endTransmission();

// Connect to device

Wire.beginTransmission(address);

// Request data from slave

// Count stands for number of bytes to request

Wire.requestFrom(address, count);

while(Wire.available()) // slave may send less than requested

{

char c = Wire.read(); // receive a byte as character

data[i] = c;

i++;

}

Wire.endTransmission();

}

void init_adxl345() {

byte data = 0;

i2c_write(ADXL345_ADDRESS, 0x31, 0x0B); // 13-bit mode +_ 16g

i2c_write(ADXL345_ADDRESS, 0x2D, 0x08); // Power register

i2c_write(ADXL345_ADDRESS, 0x1E, 0x00); // x

i2c_write(ADXL345_ADDRESS, 0x1F, 0x00); // Y

i2c_write(ADXL345_ADDRESS, 0x20, 0x05); // Z

// Check to see if it worked!

i2c_read(ADXL345_ADDRESS, 0X00, 1, &data);

if(data==0xE5)

Serial.println(“it work Success”);

else

Serial.println(“it work Fail”);

}

void read_adxl345() {

byte bytes[6];

memset(bytes,0,6);

// Read 6 bytes from the ADXL345

i2c_read(ADXL345_ADDRESS, ADXL345_REGISTER_XLSB, 6, bytes);

// Unpack data

for (int i=0;i<3;++i) {

accelerometer_data[i] = (int)bytes[2*i] + (((int)bytes[2*i + 1]) << 8);

}

}

// initialise and start everything

void setup() {

Wire.begin();

Serial.begin(9600);

for(int i=0; i<3; ++i) {

accelerometer_data[i] = 0;

}

init_adxl345();

}

void loop() {

read_adxl345();

Serial.print(“ACCEL: “);

Serial.print(float(accelerometer_data[0])*3.9/1000);//3.9mg/LSB scale factor in 13-bit mode

Serial.print(“\t”);

Serial.print(float(accelerometer_data[1])*3.9/1000);

Serial.print(“\t”);

Serial.print(float(accelerometer_data[2])*3.9/1000);

Serial.print(“\n”);

delay(100);

}

5. 测试结果

按照上图接好线,烧录好代码,上电后,打开串口监视器,转动传感器,数值变化显示如下图。

6. 相关库文件链接

http://url.cn/4AQPFis