home-weather-station

An arduino based weather station with visualisations powered by d3js.

It is able to generate graphs of the temperature in SVG format which looks like this:

Hardware setup

Prerequisites

• Arduino UNO
• Maxim DSB18B20 thermal sensor
• A 4.7k resistor
• A micro breadboard
• Some wire jumpers
• A host PC with python

Arduino wiring

The wiring is done as illustrated:

• the green wire is for the data line, which is the central pin
• the red wire goes through the 4.7k resistor first, then powers the DSB18B20 via the data line.
• the black wire is for linking GND and VDD to GND

Software setup

Prerequisites

• python
• pySerial (pip install pyserial)
• Arduino IDE (http://www.arduino.cc/en/Main/Software)

How to run it

Start by cloning this repository:

git clone git@github.com:Makohoek/home-weather-station.git

Configuring the arduino

Follow the small tutorial on http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html. Note this serial number down, you will need it in the configuration step. We will call it my_serial_number.

After that, you should edit the code from arduino/ds18b20_read_temperature/ds18b20_read_temperature.pde: Go to line 32, you should see something like this:

// Assign the addresses of your 1-Wire temp sensors.
// See the tutorial on how to obtain these addresses:
// http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
DeviceAddress thermometer = { 0x28, 0x08, 0xF0, 0x5A, 0x06, 0x00, 0x00, 0x0B };

Replace the thermometer address with my_serial_number and flash this .pde file on your Arduino.

Core configuration

Then, edit the configuration file to match your setup:

vim configuration.json

Here is my current configuration:

{
    "arduino_serial_port": "/dev/cu.usbmodem621",
    "sample_interval": 10
}