The Explorer HAT is a terrific prototyping side-kick for your Raspberry Pi 2, B+, or A+!
Warning: Last items in stock!
On the Explorer from Pimoroni there are a heap of useful input and output options that will take your projects to the next level. Great for driving motors, using analog sensors, interfacing with 5V systems, and touch interfaces!
And head on over to Pimoroni's GitHub to find a Python library, examples, documentation, and a brief introduction to the Explorer HAT!