Kev Ntsuas Kev Siv Siv ADXL345 thiab Particle Photon: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

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 particle photon tau piav qhia. Txhawm rau nyeem qhov nrawm nrawm, peb tau siv cov khoom me me nrog I2c adapter. Qhov 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. Particle Photon

3. I2C Cable

4. I2C Shield rau particle photon

Kauj ruam 2: Khoos phis tawj sib txuas:

Tshooj khoos phis tawj sib txuas ntu piav qhia qhov txuas txuas txuas uas xav tau ntawm lub sensor thiab cov duab photon. 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 peb pib nrog cov lej me me tam sim no.

Thaum siv lub ntsuas qhov ntsuas nrog qhov me me, peb suav nrog application.h thiab lub tsev qiv ntawv spark_wiring_i2c.h. "application.h" thiab lub tsev qiv ntawv spark_wiring_i2c.h muaj cov haujlwm uas pab txhawb kev sib txuas lus i2c ntawm lub sensor thiab cov khoom me me.

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

#suav nrog

#suav nrog

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

#define Ntxiv 0x53

int xAccl = 0, yAccl = 0, zAccl = 0;

void teeb tsa ()

{

// Teem sib txawv

Particle.variable ("i2cdevice", "ADXL345");

Particle.variable ("xAccl", xAccl);

Particle.variable ("yAccl", yAccl);

Particle.variable ("zAccl", zAccl);

// Pib I2C kev sib txuas lus li MASTER

Hlau.begin ();

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

Serial.begin (9600);

// Pib I2C kis tau tus mob

Wire.beginTransmission (Addr);

// Xaiv bandwidth tus lej sau npe

Hlau.write (0x2C);

// Xaiv cov ntaub ntawv tawm tus nqi = 100 Hz

Hlau.write (0x0A);

// Nres I2C Kev Kis

Wire.endTransmission ();

// Pib I2C kis tau tus mob

Wire.beginTransmission (Addr);

// Xaiv lub zog tswj npe

Hlau.write (0x2D);

// Xaiv nws pib pw tsis taus

Hlau.write (0x08);

// Nres I2C kev xa mus

Wire.endTransmission ();

// Pib I2C kis tau tus mob

Wire.beginTransmission (Addr);

// Xaiv cov ntaub ntawv sau npe

Hlau.write (0x31);

// Xaiv tag nrho kev daws teeb meem, +/- 2g

Hlau.write (0x08);

// Xaus I2C kis

Wire.endTransmission ();

ncua (300);

}

void lub voj ()

{

unsigned int cov ntaub ntawv [6];

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

{

// Pib I2C kis tau tus mob

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 los ntawm lub cuab yeej

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 ();

}

ncua (300);

}

// 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;

}

// Tso tawm cov ntaub ntawv rau dashboard

Particle.publish ("Acceleration in X-Axis is:", String (xAccl));

Particle.publish ("Acceleration in Y-Axis is:", String (yAccl));

Particle.publish ("Acceleration in Z-Axis is:", String (zAccl));

}

Particle.variable () muaj nuj nqi tsim cov kev hloov pauv kom khaws cov zis tawm ntawm lub sensor thiab Particle.publish () muaj nuj nqi qhia cov zis ntawm lub dashboard ntawm lub xaib.

Cov zis sensor tau pom hauv daim duab saum toj no rau koj siv.

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.