Hands On: Raspberry Pi Model B

Model B is the higher-spec variant of the Raspberry Pi, with 512 MB of RAM, two USB ports and a 100mb Ethernet port. It’s the most popular model: It can be used to learn about computing; to power real-world projects (like home breweries, arcade machines, musical root vegetables, robot tanks and much more); as a web server; a bitcoin miner; or even play Minecraft.

Dusk to dawn automatic light control system

An automatic light control system works by sensing the ambient light around the system and thus controlling the light. Automatically turning off during the day and turning on during the night. This system helps to reduce consumed energy and is designed for outdoor use such as street lights.

The direction of electric current

Electronics is most confusing to me because it assumes that charge flows in one direction when actually knowing that it flows in the other direction.. its just that crazy!

Raspberry Pi model B+ out on June

Raspberry Pi Foundation has done some major upgrades from B to B+ and was released on June this year.
With more GPIO pins, more USB ports, Micro SD card holder, lower power consumption. better audio filters and neater form factor the Pi B+ is an awesome media device almost.