Senzor Temperatura Inlantuibil Brick (DS18B20).
You will always get the same devices in the same order Must be called before search() oneWire.reset_search(); assigns the first address found to insideThermometer if (!oneWire.search(insideThermometer)) Serial.println( Unable to find address for insideThermometer ); assigns the seconds address found to outsideThermometer if (!oneWire.search(outsideThermometer)) Serial.println( Unable to find address for outsideThermometer ); show the addresses we found on the bus Serial.print( Device 0 Address: ); printAddress(insideThermometer);.
The order is deterministic.
It might be a good idea to check the CRC to make sure you didn 39;t get garbage.
A zero might mean that the bus is shorted, there are no devices, or you have already retrieved all of them.
Returns 1 if a new address has been returned. method 1: by index if (!sensors.getAddress(insideThermometer, 0)) Serial.println( Unable to find address ); if (!sensors.getAddress(outsideThermometer, 1)) Serial.println( Unable to find address ); if (!sensors.getAddress(outsideThermometer1, 2)) Serial.println( Unable to find address ); method 2: search() search() looks for the next device. ideally, you would do this to initially discover addresses on the bus and then use those addresses and manually assign them (see above) once you know the devices on your bus (and assuming they don 39;t change). device address can be retrieved by using either oneWire.search(deviceAddress) or individually via sensors.getAddress(deviceAddress, index) insideThermometer { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 }; outsideThermometer { 0x28, 0x3F, 0x1C, 0x31, 0x2, 0x0, 0x0, 0x2 }; search for devices on the bus and assign based on an index. the addresses below will beed to be changed to valid device addresses on your bus. ); report parasite power requirements Serial.print( Parasite power is: ); if (sensors.isParasitePowerMode()) Serial.println( ON ); else Serial.println( OFF ); assign address manually. )
Serial.print( Found )
Serial.print(sensors.getDeviceCount(), DEC)
Serial.println( devices.
DallasTemperature sensors(oneWire); arrays to hold device addresses DeviceAddress insideThermometer, outsideThermometer, outsideThermometer1; void setup(void) { start serial port Serial.begin(9600)
Serial.println( Dallas Temperature IC Control Library Demo )
Start up the library sensors.begin(); locate devices on the bus Serial.print( Locating devices...
Librarie Arduino Senzor Temperatura: - http: www.milesburton.com ?title Dallas_Temperature_Control_Library Librarie Arduino OneWire (va trebui sa o instalezi si pe aceasta) - http: www.pjrc.com teensy td_libs_OneWire.html Cod sursa: include onewire.h include dallastemperature.h Data wire is plugged into port 2 on the Arduino define ONE_WIRE_BUS 2 define TEMPERATURE_PRECISION 9 Setup a oneWire instance to communicate OneWire oneWire(ONE_WIRE_BUS)
Pass our oneWire reference to Dallas Temperature.
Fire de conectare potrivite sunt acestea - http: www.robofun.ro index.php?route product searchsearch fir%20conexiune%20multifilar%200.35 Daca vrei sa masori Temperatura in N locatii, ai nevoie de componenta Motherboard si de N-1 senzori de Temperatura Dallas DS18B20 .
Un Senzor este deja lipit pe motherboard, iar pe celalalt il conectezi cu fire in pinii cu surub.
Daca vrei sa masori Temperatura in doua locatii, ai nevoie de componenta Motherboard si de un Senzor de Temperatura Dallas DS18B20 .
Asadar, daca vrei sa masori Temperatura intr-o singura locatie, ai nevoie nevoie doar de componenta motherboard.
Componenta Motherboard dispune de un conector cu surub cu trei pini, precum si de un Senzor Dallas DS18B20 deja lipit pe placa.
Spre deosebire de alti senzori de temperatura, aceasta componenta permite conectarea simultana a unui numar foarte mare de senzori de Temperatura (fiecare Senzor dispune de o adresa unica pe 64 de biti), iar lungimea firelor poate atinge fara probleme cateva sute de metri.
Este o componenta bazata pe senzorul de Temperatura Dallas DS18B20 .
Gama : -55 C to +125 C .
Precizie : 0.5 grade Celsius.
Senzor Temperatura Inlantuibil Brick (DS18B20)
