DIY Home Weather Station

It probably occurred to a lot of people, one time or another, to make a home weather station. This is especially true for those who need something specific or just love to tinker with electronics.
This kind of device can track the weather at your village, backyard, or inside your home. In my case the need was caused by the fact that in our city there is no weather station and data that I have is actually from another city

Before we continue lets see the main operational features:

  • It will measure temperature, humidity, atmospheric pressure and intensity of rainfall through sensors connected to Arduino board (small PCB controller – sounds scary, but is not);
  • It will measured dew point and humidex (temperature as felt by the human body) based formulas with data from other sensors;
  • Will make data available in on the Internet. For visualization we will use graphics that are drawn by a server that will collects the data;

What knowledge do we needed?

  • Minimum experience with soldering iron;
  • Minimum programming knowledge – the controller is programmed with IDE in C language. All sensors that we are going to use, have libraries with code, and you have to adjust them according to your needs;

What materials do we need?

Arduino Uno
Arduino Uno board – the version with soldered chip is available for around $10

temp sensor
Temperature and humidity sensor – I will use SHT75, because I have one, but I recommend using DHT11 / DHT22 (pictured below) – the price is $6 – $5

pressur sensor
Sensor for atmospheric pressure BMP180, manufactured by Bosch – price again is around $5 – $6 . There is a built-in temperature sensor, but is not quite accurate – if you do not interfere with deviations of 2-3 degrees may very well be used

ETH Sheild
Arduino Ethernet Shield

rain sensor
Rain sensor

All sensors can be found cheaper on Chinese websites, if you wait for delivery.

In part two we will configure our IDE which we are going to use to program the Arduino

August, September, and October Weather Discussion Archive – Retrospect



October 17 2005 – 18:30 UTC

Tropical Storm Wilma is the 21st named storm of this incredible 2005 hurricane season. 2005 is now tied with the 1933 season for the most named storms in a single year. Wilma has strengthened steadily over the last 24 hours, and that should continue for an additional 24 hours. Sea surface temperatures and oceanic heat content are conducive for rapid strengthening, but the favorable anticyclone aloft has shifted to the west and is now anchored just east of the Yucatan coastline. As a result, the northerly clockwise flow around the Watsonwille and  Dallas is knocking down convection over the surface circulation with 10-20 knots of shear. It is only a matter of time until Wilma positions itself underneath this ridge, and rapid intensification will likely begin once that happens. Category three of four status may be Wilma’s peak intensity in the northwest Caribbean Sea before being drawn north by an approaching trough. Once the upper level trough begins to interact with the hurricane, upper level southwest winds may begin to weaken the cyclone to some extent.

Continue reading August, September, and October Weather Discussion Archive – Retrospect