Tag Archives: Video

Raspbery Pi-newood Derby

via Raspberry Pi

Andre Miron’s Pinewood Derby Instant Replay System (sorry, not sorry for the pun in the title) uses a Raspberry Pi to monitor the finishing line and play back a slow-motion instant replay, putting an end to “No, I won!” squabbles once and for all.

Raspberry Pi Based Pinewood Derby Instant Replay Demo

This is the same system I demo in this video (https://youtu.be/-QyMxKfBaAE), but on our actual track with real pinewood derby cars. Glad to report that it works great!

Pinewood Derby

For those unfamiliar with the term, the Pinewood Derby is a racing event for Cub Scouts in the USA. Cub Scouts, often with the help of a guardian, build race cars out of wood according to rules regarding weight, size, materials, etc.

Pinewood derby race car

The Cubs then race their cars in heats, with the winners advancing to district and council races.

Who won?

Andre’s Instant Replay System registers the race cars as they cross the finishing line, and it plays back slow-motion video of the crossing on a monitor. As he explains on YouTube:

The Pi is recording a constant stream of video, and when the replay is triggered, it records another half-second of video, then takes the last second and a half and saves it in slow motion (recording is done at 90 fps), before replaying.

The build also uses an attached Arduino, connected to GPIO pin 5, to trigger the recording and playback as it registers the passing cars via a voltage splitter. Additionally, the system announces the finishing places on a rather attractive-looking display above the finishing line.

Pinewood derby race car Raspberry Pi

The result? No more debate about whose car crossed the line first in neck-and-neck races.

Build your own

Andre takes us through the physical setup of the build in the video below, and you’ll find the complete code pasted in the description of the video here. Thanks, Andre!

Raspberry Pi based Pinewood Derby Instant Replay System

See the system on our actual track here: https://youtu.be/B3lcQHWGq88 Raspberry Pi based instant replay system, triggered by Arduino Pinewood Derby Timer. The Pi uses GPIO pin 5 attached to a voltage splitter on Arduino output 11 (and ground-ground) to detect when a car crosses the finish line, which triggers the replay.

Digital making in your club

If you’re a member of an various after-school association such as the Scouts or Guides, then using the Raspberry Pi and our free project resources, or visiting a Code Club or CoderDojo, are excellent ways to work towards various badges and awards. So talk to your club leader to discover all the ways in which you can incorporate digital making into your club!

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MagPi video tutorials: installing an operating system with Etcher

via Raspberry Pi

Hi folks, Rob from The MagPi here again. I’ve dropped by the blog a bit early this month to present to you our very first tutorial video: installing Raspbian (and other operating systems) with Etcher.

Install Raspbian with Etcher

Lucy Hattersley shows you how to install Raspberry Pi operating systems such as Raspbian onto an SD card, using the excellent Etcher. For more tutorials, check out The MagPi at http://magpi.cc! Don’t want to miss an issue? Subscribe, and get every issue delivered straight to your door.

You might remember that I hosted a video about the Raspberry Pi Zero W launch, telling you all about it and why it’s amazing. That was the first in a series of videos we’ll be bringing you soon, including guides and tutorials like Lucy’s video today.

Our job at The MagPi is to serve the Raspberry Pi community, so this is where I turn to you, blog readers and community-at-large: what sort of tutorials would you like to see in our videos? Whether you’ve done a few Pi projects or are just starting out, we want to hear from you about what you’d like to learn.

Let us know what you’d like us to show you next. Fill up the comments!

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The post MagPi video tutorials: installing an operating system with Etcher appeared first on Raspberry Pi.

Harry Potter and the Real-Life Daily Prophet

via Raspberry Pi

Most people would visit The Wizarding World of Harry Potter and bring back a few souvenirs to adorn their shelves. But for Piet Rullens Jr, with a video from his trip to hand, that simply wasn’t enough.

Daily Prophet poster with moving object

Daily Prophet with moving object

Taking to Photoshop, Piet designed a copy of the Daily Prophet, the newspaper from the original book and film series, and included an article about his trip to the Harry Potter theme park.

Within the design I marked an area with the exact size of the Raspberry Pi screen. Next, I plotted the poster on normal paper at 100%, so the marked area still matched the Raspberry Pi screen.

From there, Piet used the design to mark the backing board of a poster frame, allowing him to cut out a hole the size of the 7″ display.

Piet Rullens Harry Potter Poster

The display sits firmly between the lip of the screen and the glass of the frame, secured to the back of the board alongside a Raspberry Pi 3.

Piet Rullens Harry Potter Poster

As the wall behind the poster backs onto a cupboard, Piet was able to drill a small hole for the USB power lead, leaving no unsightly wiring on display after the frame was hung.

Piet Rullens Harry Potter Poster

As for the software?

The software is very simple: I use a small Python script and an Adafruit IR distance sensor to detect if somebody is approaching the poster. If that’s the case, with a simple command I turn on the Raspberry Pi screen and start a H264 movie using Omxplayer. The movie will play for 5 minutes and then I stop the movie and turn off the screen, so it’s not playing 24/7; this saves energy and screen lifetime.

We love this project, in that ‘Oh it’s amazing, but why didn’t I think of this first?’ way that every good maker feels when they see something awesome.

The post Harry Potter and the Real-Life Daily Prophet appeared first on Raspberry Pi.

Improve your programming skills with an oscilloscope

via Arduino Blog

Oscillo-02

Starting a new project is always a fun yet effective way to hone your skills while exploring circuitry and programming. To help improve his engineering chops, Joop Brokking recently bought an inexpensive oscilloscope (a device for visualizing voltage over time in an x-y graph) and connected it to an Arduino Uno. He then shared his findings in a detailed tutorial on YouTube.

In the video below, Brokking is using a Hantek 6022BE 20MHz dual-channel oscilloscope and provides three examples to better understand what can go wrong when building a simple Arduino setup.

Shining Back liveset blows your mind with light and sound

via Arduino Blog

angle

Last year, we featured an awesome audiovisual project from ANGLE that applied videomapping techniques to their livesets. Now, the Florence-based duo is back with their latest A/V system, “Shining Back,” which was designed in collaboration with JoinT Studio’s Stefano Bonifazi.

Essentially, it’s a grid structure consisting of LED lights that pulse in a geometric matrix to the duo’s live rhythms. The installation runs on an Arduino Uno and uses Mad Mapper and Modul8 software.

The immersive atmosphere created by the music is emphasized by a new research in the visual realm. Taking an architectural form of a kaleidoscope the lighting visually weaves and refracts the music into a surreal yet symbiotic form.