raspberry pi – serial console – out of band management

To get out of band management access to your raspberry pi a serial connection can be used. The raspberry pi provides per default a serial connection on some of the GPIO pins.

I just bought a USB to TTL to UART  and used my netbook as a out of band management access via SSH and minicom.

Cable setup:

  • red = +5V
  • black = ground
  • white = TXD
  • green = RXD

 

A look onto the system with the connected RS232 cable.

Raspberry pi rs232

 

CloseUp

P1020066

If necessary the Raspberry pi can be powered by the RS232. Just attach the red cable to pin 2 (just the first on the left in the second row on the picture)

A initial setup of minicom on a the raspberry pi or any other Debian / Ubuntu Linux shows if the RS232 connection works:

sudo aptitude install minicom
<output ommited>
sudo minicom -b 115200 -o -D/dev/ttyUSB0

If this works you can start get a permanent configuration for minicom

$useradd -G dialout your_user_name
$sudo minicom -s raspberry

Connection settings

  • Speed: 115200
  • Bits: 8
  • Parity: None
  • Stop Bits: 1
  • Flow Control: None

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1 comment for “raspberry pi – serial console – out of band management

  1. Dave
    September 19, 2014 at 15:02

    I built something similar: http://outofbandmanagement.wordpress.com/

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