doorbuzz/README.txt

# doorbuzz
raspberry Pi opening the front door and playing videos
the button has an RGB led to show status
features:
* button to push to open the door
* LED ring of 60 neopixels showing the current clock
* video player showing some default videos while the space is open
* a shutdown button for a clean shutdown
* watchdog

how to install
==============

sudo vi /etc/xdg/lxsession/LXDE/autostart
remove screensaver
sudo apt-get install unclutter xdotool git-core screen imagemagick
git clone git://git.drogon.net/wiringPi
cd wiringPi
./build

mkdir -p /home/pi/.config/lxsession/LXDE/
cat > /home/pi/.config/lxsession/LXDE/autostart <<"EOF"
@xset s off
@xset -dpms
@xset s noblank
@unclutter -display :0 -noevents -grab
@sudo python ./doorbuzz/setneocolor.py
@./doorbuzz/buzzctrl.sh
@./doorbuzz/videoplayer.sh
@sudo python ./doorbuzz/shutdownbutton.py
@./doorbuzz/phone_notification_client.sh
EOF


connect the button and LED to pins as shown in buzzctrl.sh
create a file "secret.txt" containing the http://user:pass@10.1.1.xx part of the URL
adapt the URL in buzzctrl.sh
adapt spaceapi URL in spacestatus.py
put .mp4 videos into ~pi/ and they will show when your hackerspace is open
you can add videos and they will be taken into account automatically

when booting, the button led uses morsecode to send the low byte of the 
IP adress in decimal

phone_notification_client.sh communicates with pidor's doorbuzz_wrapper.sh
to command the flash light

# new: using redis to manage the 60 led circle
sudo apt-get install python-pip redis-server
sudo pip install redis
#the redi.sh comes from here: https://github.com/crypt1d/redi.sh
cd ~
git clone https://github.com/jgarff/rpi_ws281x.git
cd rpi_ws281x
sudo apt-get install scons
scons
sudo scons

# setup watchdog
sudo modprobe bcm2708_wdog
echo "bcm2708_wdog" | sudo tee -a /etc/modules


sudo apt-get install watchdog
sudo update-rc.d watchdog defaults

sudo sed -i 's/#\(watchdog-device\)/\1/
             s/#\(max-load-1\s\)/\1/
            ' /etc/watchdog.conf

sudo service watchdog start

Note: projectionscreen.sh is a standalone program called remotely by pidor
because pidor knows the IP adress of the projector but doorbuzz has the RF remote connected.
The remote command works with ssh, so install pidor's root pub key into
~pi/.ssh/authorized_keys
todo
====
create a config file
put more of the hardcoded values from code into parameters
make code resilient against missing commands (e.g. gpio not in PATH)
move script to run in screen instead starting from rc.local