Sort of a half-hearted attempt at a neat product. Just for a start, it's called a "Dev Kit" but for $50 all you get is a $10 PCB. No cables, no power supply, no docs, not even a battery. Online support is almost non-existent except for a forum. I still haven't figured out where to download code samples. The sellers need to spend 5 minutes looking at Adafruit to see how it's done.