Resources – advanced users
This section contains some advanced projects that I think are interesting and fun to build. This last section has some handy and useful resources to take your Arduino journey to the next level.
Projects
Based on all the basic skills of Arduino, LED, and sensor programming that you have, we believe that the following are four projects that might be interesting for you to build.
Twitter Mood Light
This is one of the cool projects that I have seen. It is a way to get a glimpse of the collective human consciousness. It is a way to be alerted with the world's events as they unfold, or when something big happens. Arduino connects directly to any wireless network via the WiFly module. It then searches Twitter for tweets with emotional content and collates the tweets for each emotion. It also does some math, such that the color of the LED fades to reflect the current world mood. Here are a few examples:
Red for anger
Yellow for happiness
Pink for love
White for fear
Green for envy...