Apple has quietly released a battery charger - and I must admit that I did not realise it was something special until I read the following :

The specs are what make this thing particularly interesting for low-power battery-powered devices:
Read more

Technorati Tags: Apple Array electronics green

How fantastic is this :
Read more

Technorati Tags: Arduino Array electronics

Just built my first Jeenode Relay plug

and rewrote my rewrite of the "rooms" sketch to add control of both relays from a computer.

I just used this to turn on and off a RGB LED strip I'm going to use for a light inside a set of cabinets. It works.

Next step is now to build 2 MOSFET plugs to let me control light levels and colours.

It's all starting to come together.

Technorati Tags: Array electronics Jeenode Open source Ruby this server

My first try at generating nice javascript graphs (using highcharts) from the Wattson electricity consumption meter :

nb! All text x-axis text is wrong, and the header text is wrong as well. (Did I mention that this was my first try)

Technorati Tags: Ajax Arduino Array development electronics green Ruby this server

I just bought a 5 metre roll of RGB LED's - after reading this Jeelabs article. I even bought the necessary MOSfet transistors to build the driver board.

But then I came across this story - and I happen to have a BlinkM MaxM laying around

Using MaxM with flexible RGB tape
A single BlinkM MaxM can easily drive a 5 meter (16 ft) roll of the flexible RGB SMD LED tape that’s used for architectural lighting. Each roll contains 150 RGB LEDs.

Each LED in the tape is a SMD RGB "5050" LED, capable of putting out about 6000mcd. The spacing between LEDs is 3.3cm (~1.25").
Read more

Technorati Tags: Arduino Array electronics Jeenode