I've made yesterday a little led mod for Boilers Stick. The case has four blue Leds in the corners and led ball has a built in RGB smd led. When stick is moved the color in the ball top changes. Additionally the corresponding corner according to the direction pressed are lit up.
No Movement: Ball Top is RED
UP & DOWN : GREEN
RIGHT & LEFT : BLUE
LED mod can be switched of by pressing start + select and up.
Led Attract Mode when Stick is connected to console. See the Video.
I've used for this mod a ATMEGA8 Microcontroller.
And here the movie :)