There are already several homebrew and even commercial paint/pixel-art programs in development for the Nintendo DS, but BassAceGold's UAPaint (v1.02) adds something special -- support for Guitar Hero: On Tour's Guitar Grip controller.Artists can use the Grip's buttons as tool shortcuts in UAPaint - blue for the pen, yellow for the paint bucket, red for the color picker, and green for the line tool. Slick!
We saw the potential of homebrew slot-2 accessory tinkering with Mario Kart DS hacked to interface with Taito's paddle controller, but there hasn't been any advancements with that since, possibly due to the paddle's pricing and limited availability. With Guitar Hero's popularity and readily obtainable peripheral, hopefully we'll see more homebrew uses for the Guitar Grip!
