So first we need to make sure I can output video files from a usb source.
I’ll be using “usbmount” and omxplayer, to get these packages make sure you’re pi’s setup correctly and run the following commands:
Note: make sure no storage devices are plugged into the usb port when you install “usbmount”
Shell
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sudo apt-getinstall usbmount
sudo apt-getinstall omxplayer
Once those are installed you can start trying to play videos off of the usb drive (eventually the thumb drive will be replaced with a large hdd
I’ll be using filezilla to transfer to and from the pi.
Check out the video below to see omxplayer in action:
Edit: The upload failed and I forgot to check on it. Come back soon for the video.
I’m choosing to debug my Pi over composite. The reason being is because I’m going to be working a lot with video outputs, and I don’t have a second hdmi ready monitor. I’m going to be using the EasyCAP usb video capture card. This will also give me the ability to record what i’m seeing as well. This 100% better / much more efficient than buying a second monitor and filming on it. Of course when this is ready for implementation, it will be plugged into a television with HDMI so the picture will be amazing.
The goal of this is to become independent from cable TV while still being able to do all of the same things we would with a cable service – I.E still consume content in the living room on the television.
It should also improve upon the experience. I want to be able to stream content from the Pi to any capable device. That list includes but is not limited to:
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1.Windows XP
2.Windows7
3.Linux Debian
4.Linux Ubuntu
5.iOS6(ipad)
6.iOS5.3(ipod Touch)
7.OSX andup
8.Android"Gingerbread"andup
I’ll be working on this post most of today, so they’ll be a few posts coming.
Hello! sorry about my absence, I’ve been very busy with school/baseball over the past few weeks, but summer is soon, and I’ll be updating with a higher frequency once that happens.
So. you’ll need a few things in order to make sure this whole process works.
1. Multiple ethernet connections.
2. An Arduino and a compatible wiznet device (ethernet shield)
Here I’m using an arduino knockoff I got 2 years ago when I first got into hobby electronics, and an “ETHERNET 4 NANO” by gravitech. I didn’t want to permanently implement my arduino nano, but I still wanted to be able to do the project. It’s powered by 5v from my computer (well from a powered hub) and the brown striped wire goes to the + on the powerswitch tail II. The blue cable is ethernet.
3. A webserver with php installed on it. (Mine’s just LAMP’d)
This is the important part. The arduino is accessing a .php document on the server to tell weather or not the lamp should be on. The UI is also hosted out of the servo. That laptop is my old HP laptop that I’ve had for almost 6 years, it’s now got ubuntu 10.04 LTS on it and it’s been LAMP’d among other things.
4. Something that can SAFELY switch line voltage. (I’m using a powerswitch tail II, because I really don’t want to get killed, and it’s also very simple – if you’re using naked relays, please for the love of god, be careful with line voltages.)
This thing is a beast. I can drive it via 5v easily, and it switches line like a champ. It’s been in constant use since my last post about home automation.
START OF GUIDE
1. So first, we need to hook up the shield, the arduino and the PSTII. It’s really easy.
2. Get linux on the computer you want to run the server out of. I made a video a long time ago back when I was first getting into linux. The installation process is still the same, you can find that video here.
3. Install various programs your server. First things first, you have to install openssh by running the command:
sudo apt-get install openssh
This will make the server headless, and it will enable you to access the server via command line. Specifically through PuTTY for windows. You can then ssh to your server which is key. You then need to install LAMP by running the command:
sudo apt-get install LAMP
This will install PHP on your server as wells apache and mysql. The two ladder objects are not essential for this project, but if you are going to use the server for other things, I strongly recommend you get them as well. The install process is very easy, just make sure you WRITE EVERY USERNAME AND PASSWORD YOU USE DOWN. I’ve had to reinstall several times before I learned my lesson on this.
After you are done with that, install vim by running the command:
sudo apt-get install vim
Vim is a text editing program for linux. You also need to get pure ftp to upload and download files from your server. Get it by running the command:
sudo apt-get install pure-ftpd
Congrats! you are now an owner of a very powerful linux server. Wasn’t that easy?
4. Upload the call.php, res.php documents to your server.
This is the call.php text, you just need to make it into a .php document and upload it to the server. This document creates a form that the user accesses to turn the lamp on and off.
This is the res.php. It is what the user is taken to once they have entered the information in the call.php.
If you walk though the code. You will see that once the correct password gets entered, the res.php document creates a functioning document stat.php. This is the same document that the arduino reads, and compares to.
Here it is, upload it to your board with the shield attached, and everything should work. Access the call.php via your server, and go through the process.
At this point everything should work, please let me know if it doesn’t in the comments.
Watch the video above for context. In summation though, what we have is basically an arduino that fetches a string from a php file on my server, interprets it, and compares it to a predetermined char array.
In the future, this WILL have a GUI that can be controlled from a website and do the lamp that way from any source inducing mobile (maybe even twitter!).
Source-wise the code isin’t very well commented but the Arduino is here, and the php is here. A word of warning: unless you want me to be able to control a leigon of lamps across the world, I would suggest changing ip addresses / filepaths on the Arduino side.
On another side note all of my sources for stuff I write about on this blog here
So I’ve made a bit of progress with the project that I’ve been undertaking lately. I’m trying to control a powerswitch tail from an arduino via the internet using the Ethernet shield and a PHP server. Right now I can edit a the name of a string (well, echo) in putty on a document on my PHP server (the very same LAMP that’s allowing me to type this post!) and have the Arduino decode that string (echo) and print it back to the serial console at 9600 baud. You can grab the source for the Arduino here and the PHP script here See comments in the arduino code for notes about setup. Also deduction is your friend 🙂 Happy programming!
