Arduino Wifi Temperature Logger

This is a simple demo using the ESP8266 and Cactus Micro (a arduino compatible board) to update a remote server (https://data.sparkfun.com/) using a digital temperature sensor.

Step 1: Materials

Arduino Wifi Temperature Logger
Arduino Wifi Temperature Logger

The Cactus Micro is an arduino compatible dev board, it integrated a WIFI chip ESP8266.

  • 1 x Cactus Micro - contains a ESP8266 module ESP-11 (http://www.ebay.com/itm/261749723533)
  • 1 x DS18B20 Digital Temperature Sensor

  • 1 x 4.7k resistor

  • 1 x Power supply (4.3V up to 12V, I used a 3.7v)

    Step 2: Connecting the wires together

    Arduino Wifi Temperature Logger
    Arduino Wifi Temperature Logger
    Arduino Wifi Temperature Logger
  • Connect esp8266 module is easy. Just plug in to the pins.
  • DS18B20 - DQ(2) -> Cactus pin 14, DQ(2) -> 4.7KR -> VCC(3.3V)

    Step 3: Arduino Setup and Sketch

    The sketch code: https://github.com/AprilBrother/cactus-micro/blob/...

    Step 4: SparkFun Setup

    Arduino Wifi Temperature Logger

    We create a data stream at SparkFun, follow this link to do this. https://data.sparkfun.com/streams/make

    Once you've created your stream, keep the window open so you have easy access to your public and private keys handy - you'll need those to replace the KEY in the Arduino sketch.

    Now you are ready to start sending data.

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