===== Py Live Cam =====
Setup for a Raspberry Pi live camera with Python.

Based on the Raspbian Jessy image:\\
[[https://www.raspberrypi.org/downloads/raspbian/]]\\

For the VGA Hat check the modifications here:\\
[[http://paperpcb.dernulleffekt.de/doku.php?id=raspberry_boards:raspberry_vga_board]]\\

----
==== Some Mods ====
**Remove the splash screen:**
  $ sudo nano /boot/cmdline.txt
delete:
  splash

**Enable camera:**
  $ sudo raspi-config
enable camera

**Disable camera light:**
  sudo nano /boot/config.txt
add:
  # Disable camera light
  disable_camera_led=1
**Install some software:**
  $ sudo apt-get install git htop cmake

----
==== Install Python Modules ====

  $ sudo apt-get update
**Install Pip:**
  $ sudo apt-get install python-pip

**Install python picamera:**\\
[[PiCamera]]\\
  $ sudo apt-get install python-picamera

**Install python omxplayer:**\\
[[python_omxplayer|Python OMXPlayer]]\\

----
==== Python Live Cam ====

  $ mkdir picam
  $ cd picam

**Download the program:**

autostart:
/etc/rc.local

shutdownbutton (pin 22):
/home/pi/pictures_of_an_exhibition/shutdownbutton_02.py

camera:
/home/pi/pictures_of_an_exhibition/simple_camera.py


----
==== Network configuration ====
[[IP and Network]]\\

----

==== SD card read-only ====
Set the SD card to a read-only mode.\\
[[SD_card_read-only|Read-Only SDcard]]

----

==== HDMI settings ====

Check the current HDMI state:
  $ tvservice -s

List of CEA supported modes:
  $ tvservice –m CEA

List of DMT supported modes:
  $ tvservice –m DMT

Choose the prefered mode, DMT work best with HDMI beamer and monitors.\\
CEA is hdmi_group=1\\
DMT is hdmi_group=2\\

Open config file: 
  $ sudo nano /boot/config.txt

change for example CEA 720p:
  hdmi_group=1
  hdmi_mode=4

Low level changes for DMT 640×480 60 Hz would be:
  hdmi_group=2
  hdmi_mode=4

All modes are on: http://elinux.org/RPiconfig

----
==== Change H264 to mp4 ====

  $ sudo apt-get install gpac
  $ MP4Box -add filename.h264 filename.mp4
  
----
==== Links ====
[[http://raspberrypiguide.de/howtos/raspberry-pi-camera-how-to/]]\\