$35 Quad core S805 CPU board out with CPU datasheet
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Runs Ubuntu 14.04 and Android 4.4
About same expense as Raspberry Pi but a quad core running OpenGL ES 2 and comes with CPU documentation sheet. Has 40 pin GPIO for controlling peripherals. And an IR receiver to take commands from remotes.
Linux love and open source love has seen to it that this new board ships with a free OS and ready for action to make all kinds of gadgets ;)