CuriousInventor has published this really cool Instructable for an rpi spectrum analyer that uses python & an RGB LED Strip:
I was able to get it doing 2048pt FFTs and decoding mp3s in real time, and while that shouldn’t be hard on a Pi considering plenty of 8bit uCs have been made to do real time FFTs, everything is done in Python, which makes it convenient (for me) to eventually add control via a web browser, sms, and other things. There’s not much room to spare, though, it chokes when I move the mouse.
Learn how to make one yourself here!
Featured Adafruit Products
Adafruit NeoPixel Digital RGB LED Strip 144 LED – 1m Black – BLACK – We crammed ALL THE NEOPIXELS into this strip! An unbelievable 144 individually-controllable LED pixels on a flexible PCB. It’s completely out of control and ready for you to blink. This strip has a black mask, and an extra heavy flex PCB. (read more)
Each Friday is PiDay here at Adafruit, be sure to check out our posts, tutorials and new Raspberry Pi related products. Have you tried the new “Adafruit Raspberry Pi Educational Linux Distro”? It’s our tweaked distribution for teaching electronics using the Raspberry Pi. But wait, there’s more! Try our new Raspberry Pi WebIDE! The easiest way to learn programming on a Raspberry Pi.
We now have Raspberry Pi Model B with 512MB RAM in stock and shipping now!