Cov txheej txheem:
- Kauj Ruam 1: Yuav Tsum Kho Vajtse:
- Kauj ruam 2: Khoos phis tawj sib txuas:
- Kauj Ruam 3: Txoj Cai Rau Kev Ntsuas Kub:
- Kauj Ruam 4: Cov ntawv thov:
Video: Kev Ntsuas Kub Siv MCP9803 thiab Raspberry Pi: 4 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26
MCP9803 yog 2-xaim siab qhov ntsuas kub. Lawv tau suav nrog cov npe siv tau-programmable uas pab txhawb kev thov ntsuas kub. Qhov ntsuas no haum rau kev siv ntau qhov chaw ntsuas kub ntau.
Hauv qhov kev qhia no kev cuam tshuam ntawm MCP9803 sensor module nrog raspberry pi tau pom thiab nws cov phiaj xwm siv Java lus kuj tseem tau piav qhia. Txhawm rau nyeem qhov ntsuas kub, peb tau siv raspberry pi 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. MCP9803
2. Raspberry pib
3. I2C Cable
4. I2C Shield rau raspberry pi
5. Ethernet Cable
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 ntsuas cua thiab raspberry pi. 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:
MCP9803 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 Kub:
Qhov zoo ntawm kev siv raspberry pi yog, uas muab rau koj hloov pauv ntawm cov lus programming uas koj xav tau los teeb tsa lub rooj tsav xwm txhawm rau txhawm rau cuam tshuam lub sensor nrog nws. Kev siv cov txiaj ntsig zoo ntawm pawg no, peb tab tom qhia ntawm no nws yog kev ua haujlwm hauv Java. Tus lej java rau MCP9803 tuaj yeem rub tawm los ntawm peb lub zej zog Github uas yog Dcube Store.
Ntxiv rau qhov yooj yim ntawm cov neeg siv, peb tab tom piav qhia cov cai ntawm no thiab:
Raws li thawj kauj ruam ntawm kev sau npe, koj yuav tsum rub lub pi4j lub tsev qiv ntawv thaum java vim tias lub tsev qiv ntawv no txhawb nqa cov haujlwm siv hauv txoj cai. Yog li, txhawm rau rub lub tsev qiv ntawv koj tuaj yeem mus ntsib qhov txuas hauv qab no:
pi4j.com/install.html
Koj tuaj yeem luam qhov ua haujlwm java code rau lub ntsuas no los ntawm no kuj:
ntshuam com.pi4j.io.i2c. I2CBus;
ntshuam com.pi4j.io.i2c. I2CDevice;
ntshuam com.pi4j.io.i2c. I2CFactory;
ntshuam java.io. IOException; pej xeem hauv chav kawm MCP9803
{
pej xeem zoo li qub tsis muaj dab tsi tseem ceeb (Txoj hlua args ) cuam tshuam zam
{
// Tsim I2C npav
I2CBus Bus = I2CFactory.getInstance (I2CBus. BUS_1);
// Tau txais I2C ntaus ntawv, MCP9803 I2C chaw nyob yog 0x48 (72)
I2CDevice ntaus ntawv = Bus.getDevice (0x48);
// Xaiv cov npe sau npe
// Kev hloov pauv tas li, Lub zog hloov pauv, hom sib piv, 12-ntsis kev daws teeb meem
ntaus ntawv.write (0x01, (byte) 0x60);
Xov.sleep (500);
// Nyeem 2 bytes ntawm cov ntaub ntawv los ntawm chaw nyob 0x00 (0)
// temp msb, kub lsb
byte cov ntaub ntawv = tshiab byte [2];
device.read (0x00, cov ntaub ntawv, 0, 2);
// Hloov cov ntaub ntawv mus rau 12-ntsis
int temp = ((cov ntaub ntawv [0] & 0xFF) * 256 + (data [1] & 0xF0)) / 16;
yog (temp> 2047)
{
temp -= 4096;
}
ob cTemp = temp * 0.0625;
ob fTemp = cTemp * 1.8 + 32;
// Cov ntaub ntawv tso tawm rau lub vijtsam
System.out.printf ("Kub hauv Celsius yog: %.2f C %n", cTemp);
System.out.printf ("Kub hauv Fahrenheit yog: %.2f F %n", fTemp);
}
}
Lub tsev qiv ntawv uas txhawb nqa i2c kev sib txuas lus ntawm lub sensor thiab pawg thawj coj yog pi4j, nws ntau pob khoom I2CBus, I2CDevice thiab I2CFactory pab tsim kom muaj kev sib txuas.
ntshuam com.pi4j.io.i2c. I2CBus;
ntshuam com.pi4j.io.i2c. I2CDevice;
ntshuam com.pi4j.io.i2c. I2CFactory;
ntshuam java.io. IOException;
sau () thiab nyeem () lub luag haujlwm tau siv los sau qee cov lus txib tshwj xeeb rau lub ntsuas cua kom nws ua haujlwm hauv ib qho tshwj xeeb thiab nyeem cov ntawv tso tawm feem.
Qhov tso tawm ntawm lub sensor kuj tseem muaj nyob hauv daim duab saum toj no.
Kauj Ruam 4: Cov ntawv thov:
MCP9803 tuaj yeem ua haujlwm hauv thaj chaw dav ntawm cov khoom siv uas suav nrog lub khoos phis tawj ntiag tug thiab lwm yam khoom siv, hard disk drive, ntau yam kev lom zem, kev ua haujlwm hauv chaw haujlwm thiab cov ntaub ntawv sib txuas lus. Qhov ntsuas no tuaj yeem suav nrog hauv ntau lub tshuab ntse.
Pom zoo:
Siv Smartphone Raws Li Tsis Siv Tus Kheej Ntsuas Kub / Tus Ntsuas Ntsuas Kub: 8 Kauj Ruam (nrog Duab)
Siv Smartphone Raws Li Tsis Siv Tus Kws Ntsuas Kub / Tus Ntsuas Kub Portable: Ntsuas lub cev kub nrog qhov tsis sib cuag / tsis sib cuag zoo li rab phom thermo. Kuv tsim txoj haujlwm no vim tias Thermo Gun tam sim no kim heev, yog li kuv yuav tsum tau txais lwm txoj hauv kev los ua DIY. Thiab lub hom phiaj yog ua nrog cov peev txheej qis .SuppliesMLX90614Ardu
Kev Ntsuas thiab Kev Ntsuas Kub Siv HIH6130 thiab Arduino Nano: 4 Cov Kauj Ruam
Kev Ntsuas thiab Kev Ntsuas Kub Siv HIH6130 thiab Arduino Nano: HIH6130 yog qhov ntsuas cua thiab ntsuas kub nrog cov zis digital. Cov ntsuas no muab qib raug ntawm ± 4% RH. Nrog kev lag luam-ua kom muaj kev ruaj ntseg mus sij hawm ntev, qhov tseeb kub-them nyiaj digital I2C, Kev lag luam ua rau muaj kev ntseeg siab, Kev siv hluav taws xob
Kev Ntsuas thiab Kev Ntsuas Kub Siv HTS221 thiab Arduino Nano: 4 Cov Kauj Ruam
Kev Ntsuas thiab Kev Ntsuas Kub Siv HTS221 thiab Arduino Nano: HTS221 yog lub ntsuas hluav taws xob me me uas muaj peev xwm ntsuas tau rau qhov txheeb ze thiab qhov kub thiab txias. Nws suav nrog lub hauv paus ntsiab lus thiab cov teeb liab sib xyaw daim ntawv thov tshwj xeeb kev sib txuas (ASIC) los muab cov ntaub ntawv ntsuas los ntawm cov lej
Kev Ntsuas thiab Kev Ntsuas Kub Siv HTS221 thiab Raspberry Pi: 4 Cov Kauj Ruam
Kev Ntsuas thiab Kev Ntsuas Kub Siv HTS221 thiab Raspberry Pi: HTS221 yog lub ntsuas hluav taws xob me me uas muaj peev xwm ntsuas tau rau qhov txheeb ze thiab qhov kub thiab txias. Nws suav nrog lub hauv paus ntsiab lus thiab cov teeb liab sib xyaw daim ntawv thov tshwj xeeb kev sib txuas (ASIC) los muab cov ntaub ntawv ntsuas los ntawm cov lej
Kev Ntsuas thiab Kev Ntsuas Kub Siv HIH6130 thiab Raspberry Pi: 4 Kauj Ruam
Kev Ntsuas Cov Ntsuas thiab Kub Siv HIH6130 thiab Raspberry Pi: HIH6130 yog qhov ntsuas cua thiab ntsuas kub nrog cov zis digital. Cov ntsuas no muab qib raug ntawm ± 4% RH. Nrog kev lag luam-ua kom muaj kev ruaj ntseg mus sij hawm ntev, qhov tseeb kub-them nyiaj digital I2C, Kev lag luam ua rau muaj kev ntseeg siab, Kev siv hluav taws xob