MK802 - cost effective alternative to Raspberry Pi for data collection, logging, serving, Arduino IDE

This little computer runs Android 4.x out of the box, can reflash to run a Linux distro, 2 USB ports, SD slot, HDMI, wifi, 1GB DRAM, and so forth - if you've got enough io pins and processing to monitor and control what you need on your Arduino board, consider using this as your datalogger, and webserver for your energy monitoring and control station. Perhaps even run Arduino IDE.  An Arduino board with USB can connect directly to the MK802.   Cost  about $30US on ebay!