Zoeken

Veilig betalen


<< Vorige - Volgende >>


18B20 Temperatuur module


Artikelcode: ARD161



18B20 Temperatuur module




18B20 Temperatuur module. Geschikt voor gebruik met Arduino of andere microcontrollers.  

Example code:

Connect the signal to Arduino digital 10, and open serial port monitor:

#include
 
/* DS18S20 Temperature chip i/o
 
 */
 
OneWire ds(10); // on pin 10
 
void setup(void) {
 // initialize inputs/outputs
 // start serial port
 Serial.begin(9600);
}
 
void loop(void) {
 byte i;
 byte present = 0;
 byte data[12];
 byte addr[8];
 int Temp;
 if ( !ds.search(addr)) {
      //Serial.print("No more addresses.n");
      ds.reset_search();
      return;
 }
 
 Serial.print("R="); //R=28 Not sure what this is
 for( i = 0; i < 8; i++) {
   Serial.print(addr[i], HEX);
   Serial.print(" ");
 }
 
 if ( OneWire::crc8( addr, 7) != addr[7]) {
      Serial.print("CRC is not valid!n");
      return;
 }
 
 if ( addr[0] != 0x28) {
      Serial.print("Device is not a DS18S20 family device.n");
      return;
 }
 
 ds.reset();
 ds.select(addr);
 ds.write(0x44,1);        // start conversion, with parasite power on at the end
 
 delay(1000);    // maybe 750ms is enough, maybe not
 // we might do a ds.depower() here, but the reset will take care of it.
 
 present = ds.reset();
 ds.select(addr);
 ds.write(0xBE);   // Read Scratchpad
 
 Serial.print("P=");
 Serial.print(present,HEX);
 Serial.print(" ");
 for ( i = 0; i < 9; i++) {        // we need 9 bytes
   data[i] = ds.read();
   Serial.print(data[i], HEX);
   Serial.print(" ");
 }
 Temp=(data[1]<<8)+data[0];//take the two bytes from the response relating to temperature
 
 Temp=Temp>>4;//divide by 16 to get pure celcius readout
 
  //next line is Fahrenheit conversion
 Temp=Temp*1.8+32; // comment this line out to get celcius
 
 Serial.print("T=");//output the temperature to serial port
 Serial.print(Temp);
   Serial.print(" ");
 
 
 Serial.print(" CRC=");
 Serial.print( OneWire::crc8( data, 8), HEX);
 Serial.println();
}
 




€ 3.95




Voorraad:


Aantal   



Andere klanten kochten ook