2014-Archive

Raspbian

Debian Wheezy

See details below

Arch Linux

A lightweight Linux distribution

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0) - the start ...

The basic idea is to use the Raspberry PI as a monitor for some thing fishy.

I originally hacked something together for a B board but thought I would document the creation for the B+ as I am in need of a stable platform for use vs development.

1) Basic configuration

Grab the latest image of RASPBIAN - as at 30 September 2014

RASPBIAN

Debian Wheezy

Version:

Release date:

September 2014

2014-09-09

Toys from element14.

set-up of the hardware, had to recrimp a 40 way ribbon cable to get the GPIO pins outside the box.

Use Win32DiskImager or whatever the instruction are on the site to write this to the MicorSD Card. (Using a Lexar 16G 300x )

Do your normal setup on boot (sudo raspi-config if you missed something)

  1. expand the filesystem
  2. set passowrd
  3. set to cli boot
  4. set timezone
  5. enable camera
  6. make sure it is not overclocked

advanced options

  1. hostname
  2. memory split down to 16
  3. enable ssh
  4. force audio heaphone jack
  5. enable i2c

and reboot

Your system should come back with an IP of DHCP and you can log on via your usb keyboard user pi and the password the one you set above. Have a look at what your IP is and that you have no errors (warning are OK)

Remote keyboard and HDMI display and use a ssh client to access your RPI.

I like to use mobaxterm from http://mobaxterm.mobatek.net/

BTW current config - 5.13 Volt @ 210-230mA (got one of those in-line USB charger doctors)

3) Getting Webmin installed.

more or less from: http://c-mobberley.com/wordpress/2013/12/24/raspberry-pi-webmin-install-updates-via-apt-get/

pi@pibplus ~ $ sudo nano /etc/apt/sources.list

add

deb http://download.webmin.com/download/repository sarge contrib

deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib

Get the key

pi@pibplus ~ $ cd ~

pi@pibplus ~ $ wget http://www.webmin.com/jcameron-key.asc

add the key

pi@pibplus ~ $ sudo apt-key add jcameron-key.asc

pi@pibplus ~ $ sudo apt-get update

pi@pibplus ~ $ sudo apt-get install webmin

in a web browser you should now be able to access webmin on port 10000

2) Keep your device updated

http://www.raspberrypi.org/documentation/raspbian/updating.md

pi@pibplus ~ $ sudo apt-get update

and then

Option 1 http://www.richardsramblings.com/2013/02/minimalist-raspberry-pi-server-image/

Option 2

or similiar https://brmlab.cz/user/jenda/raspberry-packages (take care this is extreme ) - you should end with about a 600MB usage

I went with Option 1

Clean-ups some space - remove all the desktop stuff

pi@pibplus ~ $ sudo apt-get purge xserver.* x11.* xarchiver xauth xkb-data console-setup xinit lightdm lxde.* python-tk python3-tk scratch gtk.* libgtk.* openbox libxt.* lxpanel gnome.* libqt.* libxcb.* libxfont.* lxmenu.* gvfs.* xdg-.* desktop.* tcl.* shared-mime-info penguinspuzzle omxplayer gsfonts

6) getting some shots with the camera

pi@pibplus ~ $ sudo raspi-config

While doing the IO, I was drawing 230-250mA

pi@pibplus ~ $ sudo apt-get --yes autoremove

and then a last

pi@pibplus ~ $ sudo apt-get upgrade

reboot

pi@pibplus ~ $ sudo init 6

4) Installing RPI-Monitor

I like rpi-monitor, sensible and easy adding of rrd graphs.

more or less from: http://rpi-experiences.blogspot.fr/p/rpi-monitor-installation.html

pi@pibplus ~ $ sudo apt-get install apt-transport-https ca-certificates

pi@pibplus ~ $ sudo wget http://goo.gl/rsel0F -O /etc/apt/sources.list.d/rpimonitor.list

pi@pibplus ~ $ sudo apt-get update

pi@pibplus ~ $ sudo apt-get install rpimonitor

access on port 8888

7) Wifi installation ..

current method for slaves are documented here

below some note from past configs

pi@pibplus ~ $ lsmod

Module Size Used by

8192cu 550797 0

snd_bcm2835 19584 0

snd_soc_bcm2708_i2s 6202 0

regmap_mmio 2818 1 snd_soc_bcm2708_i2s

snd_soc_core 127841 1 snd_soc_bcm2708_i2s

snd_compress 8259 1 snd_soc_core

regmap_i2c 1661 1 snd_soc_core

snd_pcm_dmaengine 5505 1 snd_soc_core

regmap_spi 1913 1 snd_soc_core

snd_pcm 83845 3 snd_bcm2835,snd_soc_core,snd_pcm_dmaengine

snd_page_alloc 5132 1 snd_pcm

snd_seq 55484 0

snd_seq_device 6469 1 snd_seq

leds_gpio 2079 0

led_class 4118 1 leds_gpio

snd_timer 20998 2 snd_pcm,snd_seq

snd 62252 7 snd_bcm2835,snd_soc_core,snd_timer,snd_pcm,snd_seq,snd_seq_device,snd_compress

i2c_bcm2708 4943 0

pi@pibplus ~ $ lsusb

Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.

Bus 001 Device 004: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter

pi@pibplus ~ $ sudo aptitude install wicd-curses

pi@pibplus ~ $ sudo wicd-curses

And to see what is going on on your network devices

pi@pibplus ~ $ sudo apt-get install iftop

To get it reporting in rpi-monitor

pi@pibplus /etc/rpimonitor $ sudo nano data.conf

uncomment

include=/etc/rpimonitor/template/wlan.conf

9) So got a few more RPi's, have to resize the ext4 part that was expanded on the 16GB SD to try and dd to an 8 GB. Decided to mount it on my SuSe VM and do it via that.

pi@pibplus /etc/rpimonitor $ sudo /etc/init.d/rpimonitor restart

Next will be to boot and see if the SD still works if it does img it clone to the new PI's.

have some fun

http://www.raspberrypi.org/documentation/usage/camera/raspicam/raspistill.md

add a web server

http://www.penguintutor.com/linux/light-webserver

pi@pibplus ~ $ sudo apt-get install lighttpd

pi@pibplus ~ $ sudo chown www-data:www-data /var/www

pi@pibplus ~ $ sudo chmod 775 /var/www

pi@pibplus ~ $ sudo usermod -a -G www-data pi

test

pi@pibplus ~ $ sudo raspistill -o /var/www/cam2.jpg

Editing images

some details from here: http://superuser.com/questions/649033/ubuntu-add-timestamp-to-image

pi@pibplus /var/www $ sudo apt-get install imagemagick

pi@pibplus /var/www $ sudo apt-get install exiv2

8) things to consider

http://pitography.github.io/BerryCamExpress/

wget http://node-arm.herokuapp.com/node_latest_armhf.deb
sudo dpkg -i node_latest_armhf.debgit
clone https://github.com/pitography/BerryCamExpress.git
cd BerryCamExpress
npm install
cd dist 
node berrycam-server.js

/opt/vc/bin/raspistill --exif IFD1.Software=BerryCam -x EXIF.MakerNote=BerryCam -x EXIF.UserComment=BerryCam --awb Fluorescent --ev -6 --ISO 400 --output berrycamimages/session_2014-10-04/0073.jpg --width 1944 --height 1458 --quality 100 --metering Matrix --exposure Night --sharpness 12 --brightness 48 --contrast -16 --saturation -25 --imxfx None --vflip --timeout 1000

9) Updating firmware

at some point I landed on a firmware version that put my pi's into a boot loop while the usb wifi was plugged-in.

Went down to a know working version by

Once the partition has been reduced do a dd dump

#dd if=/dev/sdb of=/mnt/backup/image256.img

on the dd'ed image check the size

# fdisk -l image256.img

Disk image256.img: 16.0 GB, 16012804096 bytes, 31275008 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x00090806

Device Boot Start End Blocks Id System

image256.img1 8192 122879 57344 c W95 FAT32 (LBA)

image256.img2 122880 5151223 2514172 83 Linux

Now truncate to the end +1

# truncate --size=$[(5151223+1)*512] image256.img

use whatever to write it to your SD card

root@c15:/boot# sudo rpi-update de69b134dc6e4066fe70db29816d57895dffd9b9

the above downgrade me from 3.12.30+ to depmod 3.12.28+

you can find the latest version here https://github.com/Hexxeh/rpi-firmware/commits/master.

Scratch pad for raspistill:

raspistill -t 50 -q 100 -n -e jpg -awb incandescent -sh 70 -co 10 -sa -30 -w 1280 -h 540 -ts -o 4ftclear-%04d.jpg -rot 180 -drc off -ex fixedfps