Category Archives: projector

Ask Hackaday: How Would You Build This Flight Tracker for Kids?

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 …read more

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Posted in api, Ask Hackaday, DLP2000EVM, flight tracker, projector, Raspberry Pi Zero W | Leave a comment

A Petite Pico Projector For Portable Pi

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 …read more

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Posted in Crowd Funding, crowdfunding, laser projector, MEMS, projector | Leave a comment

Teardown: AppLights Personalized Projection

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 …read more

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Posted in bluetooth, christmas lights, Holiday Hacks, home depot, i2c, led, led hacks, logic analyzer, projector, rgb, teardown, TTC2541 | Leave a comment

Backyard Planetarium with Magnets

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 …read more

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Posted in dome, geodesic, planetarium, projector, space | Leave a comment

Raspberry Pi Projection Mapping Crash Course

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.

This might seem like one of those things that’s difficult to pull off at the hobbyist level, but as it turns out, …read more

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Posted in augmented reality, projection mapping, projector, Raspberry Pi, VJ | Leave a comment

Bringing Augmented Reality to the Workbench

[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 …read more

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Posted in augmented reality, camera, electronics workbench, machine vision, projector, The Hackaday Prize, video hacks | Leave a comment

Laser projector ditches galvanometer for spinning drum

Laser projectors like those popular in clubs or laser shows often use mirror galvanometers to reflect the laser and draw in 2D. Without galvos, and on a tight budget, [Vitaliy Mosesov] decided that instead of downgrading the quality, he would seek an entirely different solution: a spinning mirror drum.

He fires a laser at a rotating drum with twelve mirror faces, each at a different adjustable vertical angle. The laser will hit a higher or lower point on the projection surface depending on which mirror it’s reflecting off – this creates resolution in the Y direction.

Timing the pulsing of …read more

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Posted in laser, laser hacks, mirror, portable, projector | Leave a comment

DIY Planetarium Built From PVC Pipes and Cardboard

When you think about DIY projects, you probably don’t consider building your own planetarium. Why would you? Building the thing is surely outside the capabilities of the individual, and even if you could figure it out, the materials would be far too expensive. There’s a limit to DIY projects, and obviously building a planetarium is on the wrong side of the line. Right?

Well, apparently not. [Gabby LeBeau] has documented the planetarium she built as her senior project, and if you’ll forgive the pun, it’s absolutely out of this world. Using readily available parts and the help of family and …read more

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Posted in planetarium, projector, PVC, space, Stellarium, video hacks | Leave a comment

Alexa Controls This Projector Thanks to ESP8266

[jfessard] doesn’t have extra-sensory perception, but does have an ESP8266. The little board seems to pop up in every hack these days. Inspired by not wanting to get up from the bean-bag chair or leave the electronics-housing cabinet wide open to use an HDMI switcher, [jfessard] hacked together an Alexa-compatible projector control via the ESP8266!

The core functionality here is the ability to turn the projector on and off, and to switch the HDMI source. [jfessard] connected the Panasonic PT-AE3000U projector to a Monoprice HDX-401TA 4×1 HDMI switcher. Tucked away in the cabinet below the projector, it is controlled using …read more

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Posted in home entertainment hacks, home hacks, projector, voice, WeMo | Leave a comment

Running Programs On Paper

It’s a simple fact that most programs created for the personal computer involve the same methods of interaction, almost regardless of purpose. Word processors, graphics utilities, even games – the vast majority of interaction is performed through a keyboard and mouse. However, sometimes it can be fun to experiment with alternative technologies for users to interact with code – Paper Programs is an exciting way to do just that.

Paper Programs is a combination of a variety of existing technologies to create a way of interacting with code which is highly tangible. The setup consists of a projector, and a …read more

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Posted in interaction, interactive, javascript, paper, programming, projector | Leave a comment