Temperature and humidity sensor
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Audrino board
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DHT-11/DHT22 Sensor for tempreture and humidity sensor.
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Breadboard
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Smart phone
npm install -- Install all dependicies
node temp.js -- Read data from sensor and tranmit data
http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-an-arduino/
http://www.instructables.com/id/Raspberry-Pi-Nodejs-Blynk-App-DHT11DHT22AM2302/