8 devices Carambola 2, Manual

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Connect using serial cable
RS ‐ 232 level
It is best to connect to carambola using standard RS-232 male cable. Just plug cable to carambola, set 115200
8N1 settings without hardware flow control and power up your carambola.
TTL 3.3V level
However, if you have TTL level USB to serial converter, you should do some soldering.
Remove J9 and J10 jumpers and connect FTDI 3.3V TTL serial to USB cable. J9.1 – RX(input), J10.1 –
TX(output). I used FTDI 3.3V USB to serial converter.
Software
You can use any terminal program you wish to communicate.