KY-001

Om sensorn

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Koppling

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Arduino exempelkod

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(); }

Bibliotek

• Arduino
• C