RaspberryPi Device Integration with temperature sensor

Temperature device send the output to raspberryPi device and after that we process data through IOT gateway.

Step1: connect temperature device with raspberryPi Device.

https://cdn-learn.adafruit.com/downloads/pdf/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing.pdf follow above links to install temperature sensor with rpi device.

Step2: install these modules on raspberryPi Device

sudo modprobe wire

sudo modprobe w1-gpio

sudo modprobe w1-therm

Step3: create simple js file to read temperature with the help of nodeJs.

// temperature sensor module 
`var ds18b20 = require('ds18b20');`


// sensor starts reading data
ds18b20.sensors(function(err, ids) {

    if (err) {
      return console.log('Can not get sensor IDs', err);
    }

  // sensor Id
  console.log('Sensor IDs', ids);

   ids.forEach(function(id) {
      ds18b20.temperature(id, function(err, result) {
        if (err) {
          console.log('Can not get temperature from sensor', err);
        } else {
          console.log('Sensor ' + id + ' :', result);
        }
      });
    });

});

// You also directly read data using temperatureSync method
console.log('Current temperature: ' + ds18b20.temperatureSync('28-051691b6b4ff', {parser: 'hex'}));

Step4: Run this command to execute file

Step3 Code has been implemented in temperature.js file. After setup you can directly run this file using below command on raspberryPi terminal. node temperature.js