I am looking for a cheap 7" Android tablet to connect via Bluetooth with and Arduino. Has anyone tested any of the tablets available on ebay or DX? My idea is to use a $75 tablet as the brain and the Arduino to interface with Sensors, either via ADK or USB-serial, and I would appreciate some thoughts on that.
However, I spotted a few potential problems below: 1. Cheap tablets have no Bluetooth. Can I use a bluetooth dongle? I've heard their USB is not powered, which could be an issue. 2. Only one USB port, which would occupied by the Bluetooth dongle. Is a USB hub an option? 3. Rumors that this tablets are unstable when connected to the charger.
Thanks, Franklin Dattein