I'm planning on building a tablet myself and installing Android on it. Here's a list of all the parts that I'm using:
Odroid -XU4
16000 mAh 3A battery
64GB eMMC 5.0
Wifi module
Bluetooth module
USB to Type M Barrel 5V DC Power Cable
USB to DC Plug Cable
Yocto 3D
And still, one of the most...