OlinuXino A20 Micro
OlinuXino Micro is an OPEN-SOURCE & OPEN-HARDWARE ARM nano computer using DEBIAN Linux DEBIAN (or Android). OlinuXino Micro is still in the "Prototyping & Hobbyiste" area with a pin spacing of 2.54mm (so it takes more space). OlinuXino Micro is a good alternative board when you have to overcome the hardware limitation for your project. A very good choice when you need more hardware, OlinuXino Micro offers 100+ GPIOs, is Industrial Grade & Noise Immune designed and propelled by the over-powerful AllWinner processor. OlinuXino board have properly documented specs (freely available).