You’ve got to hand it to marketers – they really know how to make you want something. All it takes is a little parental guilt, a bit of technical magic, and bam, you’re locked into a product you never knew you needed.
This prototype flight tracking nightlight for kids is a great example. Currently under development by Canadian airline WestJet, the idea is to provide a way for traveling parents to let kids know how long it is until Mommy or Daddy gets home from their trip. The prototype shows a stylized jet airliner with Neopixel lighting in the base. A pair of projectors in the wings shine an animated flight path on the child’s darkened bedroom ceiling, showing them when the wayward parent will return. Get past the schmaltz in the video below, and perhaps get over your jealousy of parents with kids who still eagerly await their return, and it’s actually a pretty good idea.
Now for the ask: how would you go about building something like this? And more importantly, how would you make it work for any plane, train, or automobile trip, and not just a WestJet flight? A look at the “How it will work” section of the page shows several photos of the prototype, which suggests the hardware end is dead easy. A Raspberry Pi Zero W features prominently, and the projectors appear to be TI’s DLP2000EVM, which we’ve featured before, mounted to a riser card. The Neopixels, a 3D-printed case, and the superfluous flashlight fuselage would be pretty easy, too.
On the software side, a generic version that tracks flight from any airline would need an interface for the traveler to define a flight, and something to check an API like FlightAware’s, or similar ones for whatever mode of transportation you’re using.
Seems like a pretty straightforward project. WestJet claims they’ll have their Flight Light ready sometime this summer; think we can beat them to it?
A few years ago, new, innovative pico projectors, influenced by one of the TI development kits, started appearing in Kickstarter projects and other various DIY endeavours. Those projects fizzled out, most likely due to the cost of the projectors, but we got a few laughs out of it: that wearable smartphone that projected a screen onto your wrist used the same technology.
But there’s a need for a small projector, a pico projector, or in this case a femto projector. It’s the Nebra Anybeam, and it’s a small projector that uses lasers, and it comes in the form of a Raspberry Pi hat. We would like to congratulate the team for shipping the ideal use case of their product first.
The key features of this pico projector address the shortcomings of existing projectors that can fit in your pocket. This uses a laser, and there’s no bulb, and the power consumption can be as low as 3 Watts. Power is provided over a micro USB cable. The resolution of this projector is 720p, which is sufficient for a quick setup for watching a movie, but the brightness is listed as equivalent to 150 ANSI lumens, about the same as small projectors from a few years ago.
But of course the big selling point isn’t the brightness or resolution, it’s all about the smallness of the projector itself. There is a developer’s kit, a Pi Hat, a fit-in-your-pocket version with an enclosure, and a ‘monster ball’ version of the Anybeam.
Listen, it hurts to hear, but somebody needs to say it. It’s over, OK? You’ve got to admit it and move on. Sure, you could get away with it for a week or two in January, but now it’s just getting weird. No matter how hard you fight it, the facts are the facts: the holidays are over. It’s time to pack up all those lights and decorations before the neighbors really start talking.
But don’t worry, because there’s an upside. Retailers are now gearing up for their next big selling season, which means right now clearance racks the world over are likely to be playing home to holiday lights and decor. That wouldn’t have been very interesting to the average hacker or maker a few years ago, after all, there’s only so much you can do with a string of twinkle lights. But today, holiday decorations are dripping with the sort of high-tech features you’d expect from gadgets that are actively aiming to be obsolete within the next ten months or so.
Case in point, the “AppLights Personalized Projection” which I found sulking around the clearance section of the Home Depot a couple weeks back. This device advertises the ability to project multi-color custom messages and animations on your wall, and is configured over Bluetooth with a companion application on your Android or iOS device. At a minimum we can assume the device must contain a fairly powerful RGB LED, an LCD to shine the light through, and some sort of Bluetooth-compatible microcontroller. For $20 USD, I thought it was worth taking a shot on.
Around this time last year, the regular Hackaday reader may recall I did a teardown for a Christmas laser projector. Inside we found red, green, and blue lasers of considerable power, as well as all the optics and support hardware to get them running. It was a veritable laser playground for $14. Let’s see if the AppLights projector turns out to be a similar electronic cornucopia, and whether or not we’ve got a new Hackaday Holiday tradition on our hands.
If you are a Hackaday reader, you probably like space in real life, fiction, or both. A trip to a planetarium is a great treat, but what if you could have a planetarium in your backyard? [Ecasill] thought so and used a Zip Tie domes kit to create just such a thing. It takes some sewing and a projector, but there’s a problem. The dome needs to come down if there is going to be bad weather. The answer? Magnetic dowel rods.
Because the magnets are brittle, plastic dip covers them after epoxy sticks them in place. The cloth has steel bolts to adhere, too. All in, the setup cost about $2,000. That includes a projector, a mirror ball, a sound system, and all the construction.
Projection mapping might not be a term you’re familiar with, but you’ve certainly seen the effect before. It’s when images are projected onto an object, usually one that has an interesting or unusual shape, to create an augmented reality display. Software is used to map the image or video to the physical shape it’s being projected on, often to surreal effect. Imagine an office building suddenly being “painted” another color for the Holidays, and you’ll get the idea.
[Cornelius] starts by saying he’s had Pis running projection installations for as long as three years, and while he doesn’t promise the reader it’s always the best solution, he says its worth getting started on at least. Why not? If the software’s free and you’ve already got a Raspberry Pi laying around (we know you do), you just need a projector to get into the game.
There’s a lot of detail given in the write-up, including handy pro and con lists for each option, so you should take a close look at the linked page if you’re thinking of trying your hand at it. But the short version is that [Cornelius] found the paid package, miniMAD, to be the easiest to get up and running. The open source options, ofxPiMapper and PocketVJ, have a steeper learning curve but certainly nothing beyond the readers of Hackaday.
To make things easier, [Cornelius] even goes on to give the reader a brief guide on setting up ofxPiMapper, which he says shouldn’t take more than 30 minutes or so using its mouse and keyboard interface. It would be interesting to see somebody combine this with the Raspberry Pi integrated projector we saw a couple years back to make a highly portable mapping setup.
[Ted Yapo] has big ideas for using Augmented Reality as a tool to enhance an electronics workbench. His concept uses a camera and projector system working together to detect objects on a workbench, and project information onto and around them. [Ted] envisions virtual displays from DMMs, oscilloscopes, logic analyzers, and other instruments projected onto a convenient place on the actual work area, removing the need to glance back and forth between tools and the instrument display. That’s only the beginning, however. A good camera and projector system could read barcodes on component bags to track inventory, guide manual PCB assembly by projecting which components go where, display reference data, and more.
An open-sourced, accessible machine vision system working in tandem with a projector would open a lot of doors. Fortunately [Ted] has prior experience in this area, having previously written the computer vision code for room-scale dynamic projection environments. That’s solid experience that he can apply to designing a workbench-scale system as his entry for The Hackaday Prize.
[Dr. Roel Vertegaal] has led a team of collaborators from [Queen’s University] to build TeleHuman 2 — a telepresence setup that aims to project your actual-size likeness in 3D.
Developed primarily for business videoconferencing, the setup requires a bit of space on both ends of the call. A ring of stereoscopic z-cameras capture the subject from all angles which the corresponding projector on the other end displays. Those projectors are arranged in similar halo above a human-sized, retro-reflective cylindrical screen which can be walked around — viewing the image from any angle without a VR headset or glasses — in real-time!