Hi! I’m Bella Palumbi. I’ve been a member of the Tech Center for almost four years now, ever since I was eleven. In that time, I’ve worked on lots of different projects, including iPhone apps, websites, virtual reality experiences, and much more.
Recently, I made a Raspberry Pi Time Lapse Camera. A Raspberry Pi is little computer that you can program to do almost anything you want. They’re great for small projects because they are cheap, light, and versatile. For my project, the idea was to make a camera that takes a picture every few seconds. You can play all the pictures in a row to see a time-lapse of the user’s day.
The first step in the project was to burn the correct .img file onto the SD Card, which would be inserted into the Pi. An .img is an operating system. I used a program called ApplePi Baker because I was using a Mac computer.
The next step was to prepare all the wiring. I needed to solder together many different components including a button, a switch, a battery, and, of course, the Pi itself. All the wires and components had to be connected in the right way. The Raspberry Pi is very small, and I was actually using the Pi Zero, which is even smaller. So it was hard to be extremely accurate with the soldering iron. I probably spent most of my time soldering and re-soldering the wires!
It’s cumbersome to carry around a jumble of electronics and wires, so the tutorial came with a 3D design file to print a case for the time-lapse camera. The easy part was printing the case. The hard part was fitting all the pieces inside. I spent about an hour rearranging little tiny components in a little tiny plastic box. A couple times, the solder holding the wires together broke and I had to re-solder them. When I finally got the box closed, I was praying that it would work.
It did! When I turned the device on, after it booted up, it started taking pictures every 15 seconds. That didn’t seem often enough, so I took out the SD card, plugged it into my laptop, and brought up the code. By changing just one number, I was able to set the time interval to 10 seconds. Then, I booted up the Pi again. Still too slow. So I set it to 5 seconds. That seemed about right. Just for fun, I also tried a 1 second interval. The LED that blinked whenever a picture was taken was solidly lit now. The Pi couldn’t process fast enough, and was barely able to shut down. Finally, I set the interval back to 5, the number that worked the best.
All in all, it was a fun project. I’m sure there will be some really amazing time-lapse videos of projects that we work on at the Tech Center.