ESP8266/Temp

Temperature Sensing with Dallas DS18B20

  // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
  // Pass the GPIO pin number sensor(s) is connected to
  OneWire oneWire(13);
  // Pass our oneWire reference to Dallas Temperature.
  DallasTemperature sensors(&oneWire);

  // Put this in setup()
  sensors.begin();

  // Put this where you want to read temp
  sensors.requestTemperatures();
  sensors.getTempCByIndex(0);

Hack for Fahrenheit and float conversion

  sensors.requestTemperatures();
  float tempFloat = sensors.getTempCByIndex(0) * 1.8 + 32; // convert to F
  int tempReading = int(tempFloat);
  int tempReadingTenth = int((tempFloat - tempReading) * 10); // Hack around %f

  // For use with sprintf()
  // sprintf(buff, 100, "Temperature: %d.%d", tempReadig, tempReadingTenth);

Dallas Library

http://www.milesburton.com/?title=Dallas_Temperature_Control_Library

Library Download:

• http://download.milesburton.com/Arduino/MaximTemperature/DallasTemperature_372Beta.zip

References

• Sensor Data Sheet
  • http://www.mouser.com/ds/2/256/DS18B20-370043.pdf
• Arduino Reference Project
  • http://www.hobbytronics.co.uk/ds18b20-arduino
• ESP8266 Reference Project
  • http://iot-playground.com/2-uncategorised/41-esp8266-ds18b20-temperature-sensor-arduino-ide