conect onewire sensor

[maverik23]

anyone know how to connect a DS1820 sensor OneWire to receive temperature data?

[rixon]

Yeah, there's lots of documentation on this. Check out these:

• http://playground.arduino.cc/Learning/OneWire
• http://sheepdogguides.com/arduino/asw1onew1.htm

These show using an interface board. You don't need an interface, though. On my Duemilanove, I run four OneWire sensors off a single port (2). I'm running three wires so I can run reliably on a 10 foot long bus, and the pull-up to the data line. You can run without the power wire, and use a common frame as a ground to get true one wire operation.

[maverik23]

I have already connected the sensor to another arduino sketch.
right now I'm using duino with heimcontrol.js. where I have to modify the sketch to receive data from this sensor.

I have connected the sensor to pin 11.
and I modified the code but does not work

/*

• Digital read
  */
  void dr(char *pin, char *val) {
  if (debug) Serial.println("dr");
  int p = getPin(pin);
  if(p == -1) { if(debug) Serial.println("badpin"); return; }
  int oraw = 0;
  if(pin==11)
  {
  int oraw = sensors.getTempCByIndex(0);
  }
  else
  {
  pinMode(p, INPUT);
  int oraw = digitalRead(p);
  }
  char m[7];
  sprintf(m, "%02d::%02d", p,oraw);
  Serial.println(m);
  }