When HN users recommended it
1 HN user recommended this in 2011, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
LEGO 4544091 Mindstorms NXT 2 0
Amazon's catalog no longer lists this product (checked 2026-11-02). The name comes from the link HN users posted.
Its not exactly cheap but have you looked into the Lego Mindstorm NXT 2.0 set?
Link: http://www.amazon.com/LEGO-4544091-Mindstorms-NXT-2-0/dp/B00...
You can build various things with it because its a LEGO product and it allows programming for specific functions. The homepage is here: http://mindstorms.lego.com/en-us/Default.aspx
Let me know if this is along the lines of what you're looking for or if I have the wrong idea. I'll try and help adjust suggestions accordingly.