Control an LED on the internet - LIVE VIDEO FEED INCULDED

Go here to view a live video feed of an LED being controlled by my Raspberry Pi, with the option of controlling the LED

(Update 16-16-2012 LED demo stopped worked as SD card wiped itself, I'm currently working on re installing and updating)

http://aforalex.no-ip.biz/led/led_control_external.php

It works by:

1. Simple PHP page that creates or deletes a file
2. Python script running continuously looking for this file
3. When it finds the file it switches the LED on, and when it doesn't it switches it off

The Webcam is currently being driving by a windows PC close by and hosted through a service called ustream. Ultimately I would like to have the webcam feed going through the PI also and control something a little bit more interesting :-) But for now its a nice proof of concept.

References: 

• http://www.themagpi.com/ (issue 2) for the python code to control the GPIOs
• http://www.instructables.com/id/Control-Stuff-with-your-Raspberry-Pi-GPIO-over-t/ - instructions on how to create something to control your Pi over the internet. I used a very similar method except used Python instead of shell

My RPi on the internet

So this is my RPi as a webserver on the internet. Its all just proof of concept stuff at the moment so not a great deal to see: http://aforalex.no-ip.biz/ . If its not working then it probably means that my Pi is switched off

Links to things that I have found useful

These are some websites that I have found to be very useful, in no particular order

Setup and general information:

• Raspberry Pi main site - http://www.raspberrypi.org/
• MagPi Magazine - http://www.themagpi.com/
• YouTube videos - http://www.youtube.com/user/RaspberryPiTutorials

• Setting static IP address - http://stuffaboutcode.blogspot.co.uk/2012/05/raspberry-pi-setting-static-ip-address.html
• Changing host name - http://www.youtube.com/watch?v=8mirU5kKFjE
• setting up Samba - http://www.unixmen.com/standalone-samba-in-debian-squeeze/
• setting up Rpi as NAS with Samba (Better than above tutorial) - http://elinux.org/R-Pi_NAS 
• Installing Chromium - http://elinux.org/RPi_Chromium
• Webcam setup and streaming - http://jerbly.uk.to/picam
• Hexxeh website, tool to update firmware - http://hexxeh.net/?p=328117855
• Setting up WiFi - http://omer.me/2012/04/setting-up-wireless-networks-under-debian-on-raspberry-pi/
• Setting up tight vnc for remote desktop - http://mitchtech.net/vnc-setup-on-raspberry-pi-from-ubuntu/
• Another tight vnc for remote desktop - this is better me thinks : http://elinux.org/RPi_VNC_Server

Internet / Web / PHP etc

• Setting up Apache - http://www.instructables.com/id/Raspberry-Pi-Web-Server/
• Setting up PHP - http://fusionstrike.com/2012/setting-php-raspberry-pi-debian
• Setting up and using Python in Apache (CGI Esc) -  http://www.cyberciti.biz/faq/ubuntu-mod_python-apache-tutorial/
• Real time webcam streaming tutorial - http://www.raspberrypi.org/phpBB3/viewtopic.php?t=7557&p=92461

Playing with the GPIO:

• MagPi Magazine (read issue 2 as has very good introduction to GPIO access) - http://www.themagpi.com/
• OpenMicros.org examples using GPIO - http://openmicros.org/index.php/component/kunena/6-computers/1163-re-raspberry-pi-what-examples?Itemid=0
• GPIO Wiki on eLinux.org - http://elinux.org/RPi_Low-level_peripherals
• Instructables on using GPIO - http://www.instructables.com/id/Control-Stuff-with-your-Raspberry-Pi-GPIO/
• Instructables on using GPIO controlled through a web browser - http://www.instructables.com/id/Control-Stuff-with-your-Raspberry-Pi-GPIO-over-t/
• A better instructables on using GPIO controlled through a web browser - http://www.instructables.com/id/Web-Control-of-Raspberry-Pi-GPIO/
• Quick2Wire video demonstrating flashing LED on a pi - http://quick2wire.com/2012/05/flashing-led-on-a-pi-via-gpio/

Electronics:

• Resistor colour code calculator - http://www.hobby-hour.com/electronics/resistorcalculator.php