Build a $150 Studio

  Our $100 studio gets $50 worth of lighting.

If you’ve been following along, you’ve already read about the $100 studio we built in an old office to record better audio and video resources for our students. We’ve recently installed $50 worth of lights to get the studio ready for video production.  Here’s what we used:

Item	#	Cost	Total
4′ two-light shop light	2	$14.98	$29.96
8 1/2″ clamp light	2	$7.85	$15.70
CFL bulbs – daylight (2 pack)	1	$9.98	$9.98
Total:			$55.64

Again, we did come a few dollars over our target of $50, but we’re in the neighborhood. Our list does not include bulbs for the shop lights (I brought in four bulbs from a twelve-pack I had in my garage) or the power strips we plugged the lights into because we scrounged those from around the office.

The installation was relatively straightforward. We hung the shop lights as close to our green screen wall as possible in order to wash the wall with light evenly. An evenly lit green screen is easier to replace with another image or video in postproduction using iMovie or a similar application. We attached a paper baffle using magnets to try to keep the light from the shop lights from backlighting the subject. Green paper was not necessary, but it was readily available so we used it.

We hung the clamp lights from the ceiling at approximately a 45-degree angle from the subject. The goal is to light the subject from just above her eyes, which means these lights may be a little high, but the ceiling was an easy way to hang them and keep them out of the way. We used binder clips to attach parchment paper over the bulbs to diffuse the light, making it less harsh. In the photo, you can see that we have added a second light (for two on each side). We did this to make sure there was plenty of light on the subject. Although the CFL lightbulbs do warm up and become brighter after about five minutes, they still have to compete with all of the light reflecting off of the green screen. So, we added the second set of lights to be sure there was plenty of light, though these may not be absolutely necessary.

Each set of lights, left and right, are plugged into a power strip on the wall. None of the lights have switches, so the switch on the power strip becomes an easy way to turn them on and off without having to plug or unplug them. Finally, the last critical detail was to get “daylight” bulbs rated at 6500K. This is the best light temperature for most cameras. Fortunately, daylight bulbs were easy to acquire and not any more expensive than other temperatures (warm, cool, etc.)

So, for a few bucks at your local home improvement warehouse, you can find plenty of lights to outfit your studio on a budget. Our next step is to test a few camera / microphone combinations to see what will fit our budget and be quick and easy to use for anyone in our program who wants to make a video. Stay tuned.

Building a $100 Studio

Like many educators, we find ourselves producing more and more online content.  Currently, to record audio, we try to find a quiet room and record directly onto our laptops, which makes for pretty lousy audio.  For video, the process is the same, including stacking furniture and books to get the webcam in our laptops to the best possible position.  Far from ideal.  As we move to more and more audio and video production, the lack of a dedicated studio space is becoming and issue.  So, we decided build a dedicated studio.

Like most educational organizations, cost is big a factor.  We just don’t have thousands of dollars to throw at the latest 4K cameras.  We also don’t need a full-blown Hollywood studio to make materials for our students to view on the web.  We started by looking at acoustical foam as a way to insulate our space, but this quickly added up to hundreds of dollars for our 10′ x 12′ room.  Our search for other options led us to Justin Troyer, OSU’s resident media services expert and author of Medialogue, who showed us a studio on campus that he had insulated with mover’s blankets.  This looked to be a solution to some of our biggest audio issues because they would both help to block out external noise and reduce the echo within the room.

We had also been struggling with what sort of background to use for video production.  We were leaning towards a velvet or velour curtain in a neutral color because it would help to further absorb the echo within the studio.  But that fabric is expensive and it would lock us into a single background for every video, which is not ideal.  Justin suggested a green screen, which can be removed digitally and replaced with almost anything.  He has several different-sized pop-up green screens which are easy to put behind the video subjects.  But in the end we decided to got with another option he suggested: paint a wall green.  This saves both money and space because the wall does not have to be set up or stored when not in use.

So, after starting with an empty office space, we used the following items to create our studio:

Item	#	Cost	Total
Mover’s Blankets – Harbor Freight	6	$7.99	$47.94
Light-Duty Ceiling Hooks – Home Depot (4 pack)	4	$1.49	$5.96
Gallon Behr Premium Plus Ultra Interior Latex Paint – Sparkling Apple	1	$30.98	$30.98
Assorted painting sundries (roller covers, masking tape)			$15.87
Total:			$100.75

We came in just over $100, which is pretty close to our target.  Included in the costs are items that got used and disposed of while we were painting (roller covers and masking tape) but not items that I already had at home that I brought in to use (paint roller, roller tray, brushes).  I also filled in a few holes in the wall with my own putty and putty knife.  You may need to factor in additional costs if you don’t have access to these basic tools.

In the end, we incurred one final cost which was to purchase a short curtain rod and rings to which allow us to slide the mover’s blanket out from in front of the door, which makes getting in and out much, much easier.  The rod and rings cost just under $22.

Now the real fun begins.  You can see from the picture that we already have a small table, chair, microphone stand, and camera tripod.  The table will be used for straight audio recording, which is why we wrapped the end of one mover’s blanked around it to enclose it on three sides.  We still need to find a microphone or two, a video camera, and some lights.  Stay tuned as we work on acquiring these items to complete our studio.

Interactive Videos

When I hear the phrase interactive videos, I think of people covered in florescent mocap pingpong balls or choppy, Choose Your Own Adventure-style stories like Dragon’s Lair.  And there are those.  But, it seems that some creative tinkerers have pushed the envelope with some of YouTube’s interactive features and come up with some interesting results.

How can they be used with ESL and EFL students?  Well, in addition to viewing and interacting with the videos and then discussing or reporting on the experience, students could be challenged to determine how the videos were made.  For the more ambitious, students could make their own videos using the same techniques.  Some of them, like the Oscars find the difference photo challenge would be relatively easy to remake.

For more interactive videos that will get your students talking, watch 15 Awesome YouTube Tricks.

How Safe Are You?

My dog, whose name is "12345."

The photo above is from a poster I see around Ohio State once in a while.  The caption reads, “Someone stole my password… now I have to rename my dog.”  I think it is an elegant way to state what is a very important message: choose a strong password.

What is a strong password?  One that cannot easily be guessed.  It’s easy to find lists of the most common passwords used online and, invariably, password and 123456 (or similar) is at the top of every list.  When I see this, I’m reminded of the movie Spaceballs, which was released in 1987.  In one scene from this Star Wars parody, Dark Helmet learns that the combination to the air shield around planet Druidia is 12345, which Dark Helmet observes is the kind of thing an idiot would have on his luggage.  The punchline, below, occurs when the air shield’s combination is revealed to President Skroob (Mel Brooks).

Besides being a chance to insert a gratuitous Spaceballs clip, what is the point?  Well, even before we’d ever heard of email, 12345 was a bad password.  Adding a 6 didn’t make it much better.

But even the brightest among us — celebrities — haven’t learned this lesson.  It seems like every couple of weeks, there is a story about how Paris Hilton’s phone, Sarah Palin’s email, or Lindsay Lohan’s MySpace, Blackberry, and Gmail accounts have been hacked.  All of these attacks were due to weak passwords, or easy-to-guess password reset questions (according to Wired, Tinkerbell – password reset answer, Wasilla High – password reset answer, and 1234 – password, respectively.)  Startlingly, trying the top 10 or 20 passwords (and their variants such as 123, 1234, 12345, etc.) could unlock as many as 20% of online accounts, according to John P. on One Man’s Blog.

So, maybe you’re not Lindsay Lohan, but you probably still have information you want to protect.  And gaining access to one account can probably lead to access to all of them.  So even if your Facebook isn’t important enough to warrant a strong password, what information in that account could be used to access your email and then your online bank account?

What makes a strong password?  When students set up their OSU email accounts, I direct them to OSU’s password policy, which requires passwords to be at least 8 characters and some combination of alphabetic, numeric, and punctuation characters.  Also, an OSU password cannot contain the same character three times or more in a row, fewer than four different characters, or easily guessed phrases and words.  You can even rate your new password at the top of the page to see if your password is acceptable.  1234 returns the message “Unacceptable – Your new password is too short.”  (Sorry, Lindsay Lohan.)

Still having trouble?  John P. has some good tips in his article.  One approach is to substitute numbers and punctuation in place of some letters in a word.  This can make your password exponentially tougher to crack.  For example, gobuckeyes could become g08uck3y3$.  But even a n00b knows we could do better.  Instead of starting with a word, consider taking the first letter of each word in a phrase or song to create an easy to remember, but seemingly random string.  For example, the first letter from each word in the first two lines of Carmen, Ohio would give us oclsopastamr.  Now substitute  numbers and symbols for a few of these letters and you have a pretty robust password: 0c1$0p4$t4mR.

(Incidentally, I wouldn’t recommend using that or any of the passwords you read here because any one of the tens of people who read this could then guess your password, but you can see how a strong password could be generated.)

Not feeling creative enough to make your own password?  Another approach is to use one of several password generators available online.  For example, grc.com has a page that generates strings of random characters each time the page is loaded.  Take as many as you need to create a strong password.  Another resource is onlinepasswordgenerator.com which generates 10 passwords at a time and can be configured to include numbers, punctuation, and capital letters, depending on your needs.

One final concern is having to remember passwords for so many different accounts.  Consider creating a simple algorithm that will alter the password slightly for each account.  For example, once you’ve committed 0c1$0p4$t4mR to memory, you could use 0c1$0p4$t4mRe for your email account, 0c1$0p4$t4mRb for your bank, and 0c1$0p4$t4mRfb for your Facebook account.  By adding the letters to the middle of the word and including the number of letters in the name of the account, each individual password would seem even more random, but all of them would be easy for you to remember.

I hope this post helps to make the internet a safer place for you.  If you recognized any of the passwords I’ve included here (especially the ones near the top), go update your accounts.  Or, change your dog’s name.

Video Game Class

Scratch games, andimations and simulations.

When I first heard about MIT’s Scratch programming language, I thought it was interesting because it seemed like a simple but powerful way for kids to create games.  Scratch is an object-oriented, event-driven, visual programming environment.  All of these terms are explained in detail in an article in the current issue of Make Magazine, but the gist is Scratch uses draggable blocks to create programs, rather than lines of code, which simplifies the process of creating a game (or presentation, animation, etc.).  In fact, it was reading the Make article that got me thinking about another video game class.

A year ago, I taught a course in Second Life with mixed results.  This virtual environment is rich with detail and almost infinitely customizable, but the learning curve was steep and students found it difficult to collaborate within Second Life.  Scratch, by contrast, is very simple — there are collections of games created by kids posted online.  Once games are posted, they can be downloaded, edited, and mashed up as part of the learning process.

So, would Scratch make a good foundation for an elective class in an intensive ESL program?  In a four-week class, the first week could be exploring scratch projects and learning some of the basics, the second week could be devoted to a small animation project, and the final two weeks could be devoted to a final game project.  I would be inclined to get students working in pairs so there would be more interaction (it would be an ESL class, after all).  I don’t have any experience with this programming language or project management in game development, but if the students were enthusiastic enough, and I learned some of the basics before the class, I think we could all learn as we go along and wind up with some interesting projects that students would be proud to share online.

Will I offer this class?  Not sure.  I’m going to try to track down some students who would like to give it a test-drive to see if it could work.  If things go smoothly, maybe it’s something I would try in the summer.  Stay tuned.