Readers offer their best tips for building your own 3D projector, coordinating group photos for events, and studying more effectively.
Every day we receive stacks of great reader tips. From the Tips Box is where we round up some of our favourites. Got a tip of your own to share? Add it in the comments or send it using our contact form.
Build Your Own DIY 3D Projector
Nicolas shares his build for a DIY 3D projector:
Since Lifehacker has mentioned DIY projectors in the past, I thought you might be interested in learning about a project I did that combines both. The trick is to consider the two halves of your LCD screen as two separate screens that you need to project using separate optics.
Upload Group Event Photos to Google Drive with EntourageBox
Frank shares how he coordinated everyone's photos from a school trip:
I am parent volunteer for my son's high school marching band and one of the website admins for the supporting booster club. The band is taking a trip to Disney to perform. A lot of parents are going along to enjoy the show.
Everyone will be taking pictures & videos. We want copies of photos so that we can post them on our website and we wanted a simple method for people to share with us. One of our solutions was to set up an EntourageBox that links directly to our Google Drive. It seems to be working pretty well.
Study in Stress Conditions Similar to Your Test Environment
Carlos shares a tip for preparing for a stressful exam:
I was studying for my medical boards and it occurred to me that being in a quiet room wouldn't prepare me for the stress of performing under pressure. Knowing that epinephrine mediates the stress response and that heavy aerobic exercise increases epinephrine, I started doing practice tests on a high resistance stationary bike at the gym on my smart phone. When I got to the testing center I was prepared to deal with the heart pounding and sweating my nerves had in store for me. I immediately thought of Lifehacker.
Even if you don't want to go quite this far in your preparation, context-dependent memory is a real thing and there are milder steps you can take. For example, if you know you'll be taking your exam in an uncomfortable seat under fluorescent lights, try studying that way, too.
Photo by ccarlstead.
Build a Christmas Tree Arduino Shield
Arduino Guay shares a project for creating a Christmas tree Arduino shield:
This is my latest project with Arduino -- a Christmas tree Arduino Shield based on WS2812b. The circuit consists of 20 WS2812 LEDs and a Piezo buzzer, creating a nice show of multicolored lights while playing 'Jingle Bells'.