Kev Ntsuas Kev Xeem Siv ADXL345 thiab Arduino Nano: 4 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26

ADXL345 yog qhov me me, nyias, lub zog loj, 3-axis accelerometer nrog kev ntsuas siab (13-ntsis) ntsuas txog li g 16 g. Cov ntaub ntawv tso tawm digital yog ua raws li 16-ntsis twos ua tiav thiab siv tau los ntawm I2 C digital interface. Nws ntsuas qhov kev nrawm nrawm ntawm lub ntiajteb txawj nqus hauv kev thov qaij-nkag siab, nrog rau kev nrawm nrawm los ntawm kev txav lossis poob siab. Nws qhov kev daws teeb meem siab (3.9 mg/LSB) ua rau ntsuas ntsuas qhov xav tau hloov qis dua 1.0 °.

Hauv qhov kev qhia no kev cuam tshuam ntawm ADXL345 sensor module nrog arduino nano tau piav qhia. Txhawm rau nyeem qhov nrawm nrawm, peb tau siv arduino nrog I2c adapter Qhov no I2C adapter ua rau kev txuas mus rau lub ntsuas qhov ntsuas tau yooj yim thiab ntseeg tau ntau dua.

Kauj Ruam 1: Yuav Tsum Kho Vajtse:

Cov ntaub ntawv uas peb xav tau kom ua tiav peb lub hom phiaj suav nrog cov khoom siv hauv qab no:

1. ADXL345

2. Arduino Nano

3. I2C Cable

4. I2C Shield rau Arduino Nano

Kauj ruam 2: Khoos phis tawj sib txuas:

Tshooj khoos phis tawj sib txuas ntu piav qhia qhov txuas txuas uas xav tau ntawm lub sensor thiab arduino nano. Ua kom muaj kev sib txuas raug yog qhov tseem ceeb xav tau thaum ua haujlwm ntawm ib qho system rau qhov xav tau cov zis. Yog li, qhov xav tau kev sib txuas yog raws li hauv qab no:

ADXL345 yuav ua haujlwm dhau I2C. Nov yog qhov piv txwv kab hluav taws xob daim duab, qhia txog yuav ua li cas xaim txhua lub interface ntawm lub sensor.

Tawm-ntawm-lub thawv, lub rooj tsavxwm tau teeb tsa rau I2C interface, zoo li peb pom zoo siv qhov kev sib txuas no yog tias koj tsis ntseeg lwm yam.

Txhua yam koj xav tau yog plaub lub xov hlau! Tsuas yog plaub qhov kev sib txuas xav tau Vcc, Gnd, SCL thiab SDA tus pin thiab cov no txuas nrog kev pab ntawm I2C cable.

Cov kev sib txuas no tau qhia hauv cov duab saum toj no.

Kauj Ruam 3: Txoj Cai Rau Kev Ntsuas Kev Ceev:

Cia pib nrog tus lej arduino tam sim no.

Thaum siv lub ntsuas qhov ntsuas nrog arduino, peb suav nrog Wire.h lub tsev qiv ntawv. "Hlau" lub tsev qiv ntawv muaj cov haujlwm uas pab txhawb i2c kev sib txuas lus ntawm lub sensor thiab pawg thawj coj saib arduino.

Tag nrho cov cai arduino tau muab hauv qab no kom yooj yim ntawm cov neeg siv:

#suav nrog

// ADXL345 I2C chaw nyob yog 0x53 (83)

#define Ntxiv 0x53

void teeb tsa ()

{

// Pib I2C kev sib txuas lus li MASTER

Hlau.begin ();

// Initialise serial communication, teeb baud tus nqi = 9600

Serial.begin (9600);

// Pib I2C Kev Kis

Wire.beginTransmission (Addr);

// Xaiv bandwidth tus lej sau npe

Hlau.write (0x2C);

// Hom qub, Cov ntaub ntawv tawm tus nqi = 100 Hz

Hlau.write (0x0A);

// Nres I2C kev xa mus

Wire.endTransmission ();

// Pib I2C Kev Kis

Wire.beginTransmission (Addr);

// Xaiv lub zog tswj npe

Hlau.write (0x2D);

// Auto-sleep lov tes taw

Hlau.write (0x08);

// Nres I2C kev xa mus

Wire.endTransmission ();

// Pib I2C Kev Kis

Wire.beginTransmission (Addr);

// Xaiv cov ntaub ntawv sau npe

Hlau.write (0x31);

// Kev ntsuas tus kheej xiam oob qhab, 4-xaim interface, Kev daws teeb meem tag nrho, Range = +/- 2g

Hlau.write (0x08);

// Nres I2C kev xa mus

Wire.endTransmission ();

ncua (300);

}

void lub voj ()

{

unsigned int cov ntaub ntawv [6];

rau (int i = 0; i <6; i ++)

{

// Pib I2C Kev Kis

Wire.beginTransmission (Addr);

// Xaiv cov ntaub ntawv sau npe

Hlau.write ((50 + i));

// Nres I2C kev xa mus

Wire.endTransmission ();

// Thov 1 byte ntawm cov ntaub ntawv

Wire.requestFrom (Addr, 1);

// Nyeem 6 bytes ntawm cov ntaub ntawv

// xAccl lsb, xAccl msb, yAccl lsb, yAccl msb, zAccl lsb, zAccl msb

yog (Wire.available () == 1)

{

cov ntaub ntawv = Wire.read ();

}

}

// Hloov cov ntaub ntawv mus rau 10-ntsis

int xAccl = (((cov ntaub ntawv [1] & 0x03) * 256) + cov ntaub ntawv [0]);

yog (xAccl> 511)

{

xAccl -= 1024;

}

int yAccl = (((cov ntaub ntawv [3] & 0x03) * 256) + cov ntaub ntawv [2]);

yog (yAccl> 511)

{

yAccl -= 1024;

}

int zAccl = (((cov ntaub ntawv [5] & 0x03) * 256) + cov ntaub ntawv [4]);

yog (zAccl> 511)

{

zAccl -= 1024;

}

// Cov ntaub ntawv tso tawm rau tus saib xyuas

Serial.print ("Kev nrawm hauv X-Axis yog:");

Serial.println (xAccl);

Serial.print ("Kev nrawm hauv Y-Axis yog:");

Serial.println (yAccl);

Serial.print ("Kev nrawm hauv Z-Axis yog:");

Serial.println (zAccl);

ncua (300);

}

Hauv cov tsev qiv ntawv xaim Wire.write () thiab Wire.read () yog siv los sau cov lus txib thiab nyeem cov ntawv tso tawm.

Serial.print () thiab Serial.println () yog siv los tso saib cov zis ntawm lub sensor ntawm cov saib xyuas ntawm Arduino IDE.

Qhov tso tawm ntawm lub ntsuas hluav taws xob tau qhia hauv daim duab saum toj no.

Kauj Ruam 4: Cov ntawv thov:

ADXL345 yog qhov me me, nyias, lub zog loj, 3-axis accelerometer uas tuaj yeem ua haujlwm hauv Tes, Cov cuab yeej siv kho mob thiab lwm yam.