Hello,
Here - as requested - I share the UART infos:
Here is my assembly of the android box at the left hand side connected to a notebook via a cheap
USB-to-UART converter. You can get this device really cheap for some dollars from
ebay.
The UART on the PCB of the android box is a 6-pin connector. Have a look at the PCB at the left and right-hand side of the connector. The numbers "1" and "6" indicate the numbering.
UART ----> UART-USB-Converter
1 ------------> not connected
2 ------------> TX
3 ------------> not connected
4 ------------> RX
5 ------------> not connected
6 ------------> GND (it is the bottommost connector in the upper picture and the black connector on the right
hand side of the lower picture)
Don't be confused that there is NO VCC (+5V). DON'T ever connect +5/+3.3 of the UART-USB-Converter to a terminal of corresponding voltage of the android box !!!
There are ONLY 3 (!) connections between the box and the UART-USB-Converter
The UART-USB-Converter is attached to a virtual serial port. Under Linux /dev/ttyUSB0 (or similar) or a COM port under MS-Windows. Use the program "putty" to read from / talk to the box @ 115 200 baud, 8-N-1
Connect everything first, start putty and THEN power on the android box. It immediately starts to talk (no screen @ android hdmi required) via its bootloader "uboot".
Be aware that via putty you can communicate with the android box. The keyboard mapping is completely odd.
Here is a
GNUmeric file (freeware spread sheet software) with the keyboard mapping (for a German keyboad).
The codes here are "ALT" codes, i.e., if you keep the "ALT"-key pressed and enter "43" the you get a "j" and so on. The mapping is fairly complete for ordinary use (booting, etc).
I use PERL scripts to send sequences of characters as commands to the android box.
Hope this helps.
If further information is required, pls., drop me a note here. I keep following the discussions... ;-)
Cheers & good luck,
wolfgang