Tag Archives: raspbian

Tethering to Android Phone for Internet via Bluetooth

As mentioned earlier until I purchase a usb dongle I am running without a network. Just for kicks though I decided to setup tethering via bluetooth with my android phone. Which allows me to update packages etc without having to plug the raspberry pi into a network point.

Bluetooth Pairing

To make it a little easier I paired to raspberry pi from my phone.

# to check the raspberry pi bluetooth name
$ sudo hciconfig hci0 name

# to set the bluetooth name
$ sudo hciconfig hci0 name raspberrypi

# make the raspberry pi discoverable
$ sudo hciconfig hci0 piscan

# setup agent to listen for pairing request
$ sudo bluetooth-agent 12345
# from my phone I connected to raspberrpi-0 and confirmed code was displayed
Confirmation request of 7654321 fir device /org/bluez/1936/hci0/dev_0E_C9_35_42_E6_E9

# turn of discoverable
$ sudo hciconfig hci0 noscan

# check connected devices
# list currently connected bluetooth devices
$ sudo bluez-test-device list
BC:B0:0B:47:57:A8 matt’s keyboard
FA:C7:48:46:47:33 Logitech Bluetooth Mouse M555b
0E:C9:35:42:E6:E9 Galaxy Nexus

Setup Tethering

To tether to android phone for internet we need a little more configuration

# package required for 'pand' command
$ sudo apt-get install bluez-compat

# connect to phone and sets up network interface
$ sudo pand --connect 0E:C9:35:42:E6:E9 -n

# show networks
$ ifconfig
bnep0     Link encap:Ethernet  HWaddr 00:4d:9c:2a:47:94  
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:12 (12.0 B)  TX bytes:60 (60.0 B)

# set dhclient to use bnep0 
$ sudo dhclient bnep0

# test internet connectivity
$ ping www.google.com
PING www.google.com ( 56(84) bytes of data.
64 bytes from syd01s13-in-f17.1e100.net ( icmp_req=1 ttl=52 time=26.3 ms
64 bytes from syd01s13-in-f17.1e100.net ( icmp_req=2 ttl=52 time=26.6 ms

Turning off tethering

To turn of tethering and unconfigure the PAN network

# release bnep0 dhclient
$ sudo dhclient -r bnep0

# disconnect pan
$sudo pand -K

Create an alias to make this tethering easy peasy

As I’ll probably turn tethering on and off lots of times I put all this into an alias

$ vi ~/.bash_aliases
alias leash='sudo pand --connect 0E:C9:35:42:E6:E9 -n && sudo dhclient bnep0'
alias unleash='sudo dhclient -r bnep0 && sudo pand -K'

After reloading bash I can simply type the following to tether or untether

$ leash
$ unleash

If you haven’t already got it installed you should also put Power Toggles on your phone so you can quickly turn wifi / bluetooth tethering on and off.

USB Bluetooth dongle and keyboard

As I am running my raspberry pi without a network (until I can grab a usb wifi dongle) I’m using a spare usb bluetooth dongle and bluetooth keyboard I had lying around.

Bluetooth Installation

$ sudo apt-get install bluez python-gobject

# check bluetooth dongle it recognised
$ hcitool dev
	hci0	7B:13:75:FD:11:EB

# scan for discoverable devices
$ hcitool scan
Scanning ...
	BC:B0:0B:47:57:A8	matt’s keyboard
	FA:C7:48:46:47:33	Logitech Bluetooth Mouse M555b

# pair with keyboard
$ sudo bluez-simple-agent hci0 BC:B0:0B:47:57:A8
RequestPinCode (/org/bluez/3465/hci0/dev_BC_B0_0B_47_57_A8)
Enter PIN Code: 12345
# type pin + enter on keyboard
New device (/org/bluez/3465/hci0/dev_BC_B0_0B_47_57_A8)

# pair with mouse
$ sudo bluez-simple-agent hci0 FA:C7:48:46:47:33
RequestPinCode (/org/bluez/2015/hci0/dev_FA_C7_48_46_47_33)
Enter PIN Code: 0000
New device (/org/bluez/2015/hci0/dev_FA_C7_48_46_47_33)

# add devices to trusted list and connect
$ sudo bluez-test-device trusted BC:B0:0B:47:57:A8 yes
$ sudo bluez-test-device trusted FA:C7:48:46:47:33 yes
$ sudo bluez-test-input connect BC:B0:0B:47:57:A8 yes
$ sudo bluez-test-input connect FA:C7:48:46:47:33 yes

# reboot and test if keyboard connects
$ sudo shutdown -r now

# list currently connected bluetooth devices
$ sudo bluez-test-device list
BC:B0:0B:47:57:A8 matt’s keyboard
FA:C7:48:46:47:33 Logitech Bluetooth Mouse M555b

As I’m using an apple wireless keyboard I needed to jump into raspi-config and reconfigure my keyboard settings

$ sudo raspi-config
# 3 - Internationalisation Options
# I3 - Change Keyboard Layout (wait a little for it to load)
# set keyboard to Apple Aluminium Keyboard (ANSI) and default options for rest of prompts

Raspbian Install

Load Raspbian Image onto SD Card

Installation was done using OSX terminal and a 16 GB SD Card (class 10).

  • Download latest Raspbian
  • Insert SD Card and open terminal
$ df -h
Filesystem      Size   Used  Avail Capacity  iused    ifree %iused  Mounted on
/dev/disk2s1    15Gi  2.1Mi   15Gi     1%        0        0  100%   /Volumes/UNTITLED

$ diskutil unmount /dev/disk2s1
$ unzip 2013-09-25-wheezy-raspbian.zip

$ sudo dd if=2013-09-25-wheezy-raspbian.img of=/dev/rdisk2 bs=1m
# note: dd does not output anything until it finishes just be patient
2825+0 records in
2825+0 records out
2962227200 bytes transferred in 295.230490 secs (10033609 bytes/sec)

$ diskutil eject /dev/disk2s1

Thats it stick the sd card into the raspberry pi and turn it on.

For those who are curious:

Why am I using /dev/rdisk2 and not /dev/disk2? rdisk is a raw path, which is faster.

I tested it to see how much faster (it wasn’t worth the wait):
5 minutes using /dev/rdisk2 vs 25 minutes using /dev/disk2

Initial Config

Now that we have the raspberry pi booted up time to ssh in and configure a few basic things.

$ ssh pi@

# set your local time.
$ sudo dpkg-reconfigure tzdata

# update package list and upgrade to latest
$ sudo apt-get update && sudo apt-get upgrade

# configure raspberry
$ sudo raspi-config
# expand filesystem to fill sd card
# change the default password (raspberry) to something else

# reboot
$ sudo shutdown -r now && exit