They posted full details of how to build one so some eBay purchases, some soldering, some breadboard action and some Linux commands later I had a working one of my own. The instructions are ace, it was pretty much paint by numbers with only a few minor tweaks. Here's an image:
- MCP3008 Analogue to Digital Converter
- DHT22 Humidity and Temperature Sensor
- BMP085 Temperature and Barometric Pressure Sensor
- A Light dependent resistor
- A variety of resistors and jumper wires (male to female)
So I can use this to annoy my wife, (e.g. when at working asking "why is it 21 degrees at home, turn the heating off").
I have a de-humidifier at home so it's interesting to see the impact of this, (and show it's not just a noisy consumer of electricity). Here's an image: