Welcome to Constant Etherpad!

These pads are archived each night (around 4AM CET) @ http://etherdump.constantvzw.org/
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    __NOPUBLISH__

Changes will be reflected after the next update at 4AM. SSTV
- Embedded device + screen, mounted on a wooden plate
- ethernet cable (Sarjah)
- mini jack, 3.5mm to rca mono (active speaker)
- ADAM A3X: 1 active speaker 50Watt  (Sarjah) https://www.adam-audio.com/en/ax-series/a3x/
- multiplug for mim 3 electricity plugs (110/220V, AC)


-----------------------------------------------------------------------------------------------

TX /RX
raspberry pi :   + SD cARD
ip:
    
PYSSTV:  install:  https://pypi.python.org/pypi/PySSTV

prepare images
format: png !
best size: 320*240  Image must be at least 320 x 256 pixels for mode MartinM1
https://en.wikipedia.org/wiki/Slow-scan_television
Martin M1 240 lines

# sudo ~/Documents/PERFORM/PERFORM-flatbread/SSTV/Horizionline/horizon1.png horizon1.wav

TRY:# for file in *.png ; do  python -m pysstv "${file}" "${file}.%jpg/wav" ; done

scripts: resize, ,  set height 256, save   jpg>png
# for file in *.jpg ; do convert -resize x256 "${file}" "${file/%jpg/png}" ; done
# for file in *.png ; do convert -resize 320 "${file}" "${file}" ; done
codec: MartinM1

scp -r /home/ooooo/Documents/PERFORM/PERFORM-flatbread/SSTV/horizon/transmit/ pi@10.94.185.132:.

rsync --progress -ra  /home/ooooo/Documents/PERFORM/PERFORM-flatbread/SSTV/horizon/transmit/ pi@10.94.185.132:/home/pi/transmit

pi@rx:~ $ rsync -ave "ssh -p 8022"  root@188.210.92.35:/var/www/uploads/ /home/pi/upload

CRONJOBS/
RSYNC
/usr/bin/rsync -ave "ssh -o ServerAliveInterval=60 -o ExitOnForwardFailure=yes -o StrictHostKeyChecking=no -i /home/pi/.ssh/servername-home-fwd -p 8022"  root@188.210.92.35:/var/www/uploads/ /home/pi/uploads/ --progress

INSATLL

regenerating host keys ( https://www.cyberciti.biz/faq/howto-regenerate-openssh-host-keys/ )
#rm -v /etc/ssh/ssh_host_*
#dpkg-reconfigure openssh-server

pysstv (img > wav)
#sudo apt-get update
#sudo apt-get install python-imaging
#sudo apt-get install python-pip
#sudo apt-get install python-pil
#sudo pip install pysstv


slowrx compiling
#sudo apt-get install libgtk-3-0
#sudo apt-get install libasound2-dev
#sudo apt-get install libfftw3-dev
#git clone  https://github.com/windytan/slowrx.git
#make


#sudo apt-get install xserver-xorg-video-fbturbo
#sudo apt-get install xinit

need to run xserver as root user... (virtual console tty0 mess otherwise...) 


blank screen
@xset s noblank
@xset s off
@xset -dpms

adapt config
autologin jessie
http://www.linuxserve.com/2015/06/how-to-enable-automatic-login-on-debian.html
prevent screen faalot
Also edit /etc/kbd/config and make sure these values are set as follows (however I believe this is only for when the lightweight desktop (LXDE) is not running (i.e. the pi is still in text / terminal mode):
BLANK_TIME=0
BLANK_DPMS=off
POWERDOWN_TIME=0


CRON

-- begin email screen dimensions --
ah nice, 
our screen is 19,5*11.5cm (7.7*4.5 inch)
as the images are 4:3 ratio and the screen is 16:9, 
we thought  of building the screen in a wooden frontplate/mask,
red nordic pine, which sarjah can slide in the wooden platform
so the final visible screen size will be 12 * 9 cm  (4.7 *3,5 inch)

the frontplate would be 25*16cm or 10*3 inch is that a good size?

something we need to know to make sure, is the dimensions of the platform as built, to make the frontplate to fit nicely.
they still have to adapt it to the inclination of the plint.

xm
-- end email screen dimensions --


-- manual --
_ casing
_ embedded device
_ installation (numbered)
_ UPLOAD/CONNECT:  url / what kind of image formats /

FRIDAY
audio routing: https://trac.ffmpeg.org/wiki/Capture/ALSA
uploading images -- 
imagemagick /resize images
- via WirelessBelgie server -- rsync + processing (imagick / pysstv)
php script + captcha+ / owncloud ~ secure service ?
http://www.w3schools.com/php/php_file_upload.asp
http://www.w3schools.in/php-script/captcha/
rsync : rsync --progress -ra  root@188.210.92.35:/shares

rsync -ave --progress ssh root@188.210.92.35:/var/www/uploads /home/pi/upload

- reverse ssh can be nice..
ssh --
reverse ssh
server makest connecion with client

slowrx check
-- sstv rx
alternatives
* http://www.windytan.com/     http://windytan.github.io/slowrx/
* qsstv


---------------------------------------------
WEEKEND
CASING front panel construction
CABLING

MONDAY
---------------------------------------------
pack my stuff for Brlin / cryptodance
FINISH PACKAGE
dimension / DHL
- return address ?


TUESDAY
---------------------------------------------
POST

DHL: 954538071  /  registered under Sharjah Art Foundation name.   

shipping from prinses elisabethlaan 46 - 1030 schaarbeek : 146248  (insured it for 500EUR)
 
The shipping / consignee address is: 
 
Sharjah Art foundation 
Shawaihean Area, Arts area, 
Sharjah 
United Arab Emirates 
 
Attn: Ramez Mufdi 
00971 506364661
00971 6 5444113

dhl be tel: 027155050


    
-- fin --
moeten wij btw aanrekenen ?
geen btw


-- reverse ssh --
---- pi ---

ssh-keygen -f ~/.ssh/servername-home-fwd

root@rx:/etc/systemd/system# cat /etc/systemd/system/phone-home.service 
[Unit] 
Description=Phone Home Reverse SSH Service 
After=network.target  
[Service] 
Type=simple 
User=pi 
ExecStart=/usr/bin/ssh -NTC -o ServerAliveInterval=60 -o ExitOnForwardFailure=yes -o StrictHostKeyChecking=no -i /home/pi/.ssh/servername-home-fwd -R 12345:localhost:22  root@188.210.92.35 -p 8022  
# Restart every >2 seconds to avoid StartLimitInterval failure 
RestartSec=5 
Restart=always  
[Install] 
WantedBy=multi-user.target

---- WA server ----
ssh pi@localhost -p 12345
... pasword of rpi rx box