Feature
|
RPI 1 Model A
|
RPI 1 Model B
|
RPI 1 Model A+
|
RPI 1 Model B+
|
RPI 2ModelB
| NBT CHIP | |
SoC
|
BRCM 2835
|
BRCM 2835
|
BRCM 2835
|
BRCM 2835
| AllWinner's R8 | ||
Standard SoC Speed (MHz)
|
700
|
700
|
700
|
700
|
900
| 1000 | |
RAM (MB)
|
256
|
512
|
256
|
512
| 512 | ||
Ethernet (Mbps)
|
N/A
|
100
|
100
|
100
|
1000
| N/A | |
HDMI output
|
N/A
|
Yes
|
Yes
|
Yes
|
Yes
| With extra module | |
Composite Video out
|
Yes
|
Yes
|
via 3.5 mm jack
|
via 3.5 mm jack
| via 3.5 mm jack | Yes | |
Number of USB2.0
|
2
|
2
|
1
|
4
|
4
| 1 | |
CPU Cores | 1 | 1 | 1 | 1 | 4 | 1 | |
Storage | SD Card | SD Card | micro SD | micro SD | MicroSD | Built-in Flash | |
Internal Storage Capacity | N/A | N/A | N/A | N/A | N/A | 4 MB | |
Camera Interface (CSI) | yes | yes | yes | yes | yes | ||
Display Interface (DSI) | yes | yes | yes | yes | yes | ||
Video/Graphic Coprocessor | VideoCore IV | VideoCore IV | VideoCore IV | VideoCore IV | VideoCore IV | PowerVR SGX544 | |
Architecture | ARM11v6 | ARM11v6 | ARM11v6 | ARM11v6 | ARMv7 | ARMv7 | |
GPIO Pins | 26 | 40 | 40 | 40 | 40 |
Sunday, January 31, 2016
Raspberry Pi vs. Next-Big-Thing's CHIP SoC Computer
Thursday, September 10, 2015
OpenFrameworks: Another cool Multi-platform Framework for Graphics
Steps to download and build OpenFrameWorks:
sudo ./install_codecs.sh- git clone https://github.com/openframeworks/openFrameworks.git
- goto the OF root. This is usually the folder openFrameworks. Change directory to ./scripts/linux/ubuntu (e.g: cd openFrameworks/scripts/linux/ubuntu)
- Execute the scripts in the folder as root:
Go to ./scripts/linux and execute:
./compileOF.sh
./compilePG.sh
To generate projects (Makefile etc.) for all the examples, goto OF root, then type:
projectGenerator -v -r examples/
wxWidgets 3.0
To add the repository, first import the key:
Create soft-link:
To link, create a script file name 'wxlink' and its content as below:
For a bigger project which requires more complicated and conditional compilation, use Makefile.
sudo apt-key adv --fetch-keys http://repos.codelite.org/CodeLite.asc
Then add the source:
sudo tee /etc/apt/sources.list.d/wxwidgets.list
deb http://repos.codelite.org/wx3.0.2/ubuntu/ $(lsb_release -sc) universe
sudo apt-get update
Install wxWidgets modules:
sudo apt-get install libwxbase3.0-0-unofficial libwxbase3.0-dbg libwxbase3.0-dev libwxgtk3.0-0-unofficial libwxgtk3.0-dbg wx3.0-doc wx3.0-examples
Create soft-link:
sudo ln -s /usr/include/wx-3.0-unofficial/wx /usr/include/wx
To compile a single file, create a script named wxcompile and edit it with the content as below (assume with have subdirectory obj/Debug and bin/Debug:
#!/bin/bash
if [ -z "${1}" ]
then
echo "$0 "
exit 1
fi
FILE=`basename $1`
CPPF=$FILE
OBJF=`basename -s .cpp $CPPF`
OBJF=${OBJF}.o
g++ -g -c -Wall -DWX_PRECOMP -Winvalid-pch `wx-config --cppflags` -o obj/Debug/${OBJF} ${CPPF}
To link, create a script file name 'wxlink' and its content as below:
#!/bin/bash
if [ -z "${1}" ]
then
echo "$0 "
exit 1
fi
FOUT=$1
OBJF=obj/Debug/*.o
g++ -v obj/Debug/*.o `wx-config --libs` -o obj/Debug/$FOUT
For a bigger project which requires more complicated and conditional compilation, use Makefile.
Friday, July 3, 2015
Watching Nabawi-TV via VLC on Raspberry Pi
A new Indonesian da'wah TV has provided a streaming.
To watch, install vlc. Once installed, open the VLC, click "Media", and then "Open Network Stream". Enter:
rtsp://wowza60.indostreamserver.com:1935/nabawitv/live
To watch, install vlc. Once installed, open the VLC, click "Media", and then "Open Network Stream". Enter:
rtsp://wowza60.indostreamserver.com:1935/nabawitv/live
Friday, April 3, 2015
Script to simulate multiple DHCP clients
#!/bin/sh
#simulate 255 IPhones requesting DHCP
# Apple OUI = D8:96:95
BASE=
"d8:96:95:08:96"
FROM=$1
shift
TO=$2
if
[ -e $FROM ];
then
FROM=1;
fi
if
[ -e $TO ];
then
TO=1;
fi
for
i
in
`
seq
$FROM $TO`
do
LSB=`
echo
"obase=16; $i"
|
bc
`
MAC=
"$BASE:$LSB"
HNAME=
"`uname -n`-fakehost-$i"
#CMD="$HOME/bin/dhtest -m $MAC -V -i eth1 -h '$HNAME'"
CMD=
"$HOME/bin/dhtest -m $MAC -i eth1 -h '$HNAME'"
echo
$CMD
$CMD
sleep
1
done
Another way, the program dhtest (source code) can be download from https://github.com/saravana815/dhtest.
For example:
git clone https:
//github
.com
/saravana815/dhtest
cd
dhtest
make
Daily backup of local git changes
While working on a ticket and not ready to commit, it's a good idea to backup all of our changes to an archive file.
The following script does all that and executed daily by cronjob automatically.
Make the file executable:
The following script does all that and executed daily by cronjob automatically.
- create a file, say "backup" in /etc/cron.daily
- Type the following (change '
<yourhome directory>
' to your own login name and <git location> to the git directory where source codes are located):
backing up changed files to tarball
#!/bin/sh pushd <your source-code location> LIST=`git status --porcelain | sed -n -e '/^ [D|M]/p' | sed -e 's/^ [D|M] //' ` backupname=`git branch | sed -n -e "/^* /p" | sed -e 's/** //' ` backupname=$backupname-` date "+%s" `.backup. tar .bz2 dest= '
if [ ! -d "$dest" ] then mkdir -p $dest fi tar jcvf $dest/$backupname $LIST > /dev/null |
Make the file executable:
chmod +x /etc/cron.daily/backup
Sunday, March 22, 2015
Block Access during certain period using EBTABLES
Say, we want to block any packets coming from a device with mac address 00:01:02:03:04:05 (in other words, our router/switch should just silently drop any packets coming from this MAC address) during period of time 00:00 (00:00 AM) to 6:00 AM, do:
#ebtables -A INPUT -s 00:01:02:03:04:05 --timestart 0:0 --timestop 06:00 -j DROP
If we just want to drop IPv4 packets for the above:
#ebtables -A INPUT -p IPv4 -s 00:01:02:03:04:05 --timestart 0:0 --timestop 06:00 -j DROP
So, parameters for ebtables are actually similar (yet subset) of iptables (netfilter).
Wednesday, March 11, 2015
To fix Mute button keyboard shortcut issue on LXDE
Create a script call "amixertoggle" and save it in /usr/local/bin:
#!/bin/bash
amixer $1 sset Headphone toggle
amixer $1 sset Speaker toggle
amixer $1 sset PCM toggle
amixer $1 sset Master toggle
Edit file $HOME/.config/openbox/lxde-rc.xml and replace block that has "XF86AudioMute" to call our script. For example:
...
...
<keybind key="XF86AudioMute">
<action name="Execute">
<command>amixertoggle -c 1 toggle</command>
</action>
...
...
(" -c 1" above is for machine, where the mixer control is actually on card 1. If doesn't work, we can try different number)
Reload the modified file lxde-rc.xml by doing:
openbox --reconfigure
That's it. Everytime we press "Mute" button on our PC keyboard, the mute/unmute will toggle.
#!/bin/bash
amixer $1 sset Headphone toggle
amixer $1 sset Speaker toggle
amixer $1 sset PCM toggle
amixer $1 sset Master toggle
Edit file $HOME/.config/openbox/lxde-rc.xml and replace block that has "XF86AudioMute" to call our script. For example:
...
...
<keybind key="XF86AudioMute">
<action name="Execute">
<command>amixertoggle -c 1 toggle</command>
</action>
...
...
(" -c 1" above is for machine, where the mixer control is actually on card 1. If doesn't work, we can try different number)
Reload the modified file lxde-rc.xml by doing:
openbox --reconfigure
That's it. Everytime we press "Mute" button on our PC keyboard, the mute/unmute will toggle.
Thursday, February 26, 2015
Raspberry Pi 2
Got this New Raspberry Pi 2 I ordered a few weeks ago. It's significantly faster than the first version. I only wish it had USB 3.0 ports so I can have much bigger and faster storage.
Subscribe to:
Posts (Atom)