Hi @Mvitsor,
I have used GPS chips on a number of occasions, and I have a few questions. First, are you planning on using this ball indoors or out. Secondly, do you need GPS lock tracking, or could you use a Mindstorms ball-tracking sensor or something like that? Third, do you need location services contained in the ball or not? If you can answer these questions for me, I can help you better. Good luck.
Joseph--(Please PM me, I check my PMs a lot more)