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Building a glue stick flashlight
Building an LED flashlight is simple, right? Take a battery, connect it to an LED by way of a resistor. Alright wise guy, now make one that steps up the voltage for multiple LEDs and don’t use a...
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Chainsaw/flashlight overkill
[Robbtoberfest] has earned our admiration with this crazy chainsaw powered spot light. It looks horribly dangerous, extremely inefficient, and woefully under engineered. We absolutely love it. This...
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Building infra red light sources with regular lights
[Oneironaut] sent us another IR hack. This time it is a writeup on the best ways to create IR light sources from regular lights. Since normal flashlight bulbs emit a broad enough spectrum to include...
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The life and death of a fantastically brilliant flashlight
[Holzleim's] flashlight build is quite impressive. And the rise and fall of the hardware is quite a story. He designed it as a handheld light, relying on batteries to power a multitude of high-power...
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A Light-Following Pong Game
Although not everyone has the ability to make a hacked Pong game Like [Marcelo], even fewer have the ability or the creativity to come up with the elaborate hack that he did. The basic premise of his...
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Powering kids’ toys by hand
[Dominik’s] daughter had an old toy piano that she loved, but when the batteries started to die down, it played awful tones and sounded generally out of tune. While this is likely something our...
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Intelligent flashlight will literally show you the way
Flashlights are so 20th Century. Be it the incandescent type that popped up very early on, or LED models with came around in the 90′s, there’s not much excitement to the devices. But [Sriranjan...
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Lamp upgrade makes you a hot-head
[Cameron] decided to give his twenty-year-old headlamp a makeover. He uses it when he’s out for a run and wanted to have more light to see where he’s going, as well as a red tail light on the back....
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Supercap lights your way in times of need
You won’t find [Antoine] stumbling around in the dark. He just finished working on this LED flashlight which draws power from a super-capacitor (translated). He realized that lighting a...
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Doubling up on the USB supercap flashlight
[Antoine] wrote in to let us know that he soldiers on with his flashlight project. He’s doubled up on the supercaps and tripled the LEDs (translated). The core concept has stayed the same since the...
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A flashlight for any occasion
Whether you’re trying to light your path, build your own night vision, or do some tanning at home, this flashlight has you covered. [David Prutchi] designed the high power flashlight with three...
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Laser so easy to build anyone can burn their eyes out
The boys over at North Street Labs built a handheld burning laser and made it look super simple. Well it’s not. We don’t think it’s hard either, but the only reason it looks so easy is because they...
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Monitor your heartbeat with a webcam and a flashlight
After seeing some heart rate monitor apps for Android which use the camera and flashlight features of the phones, [Tyson] took on the challenge of coding this for himself. But he’s not using a smart...
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Recycle lithium cells by building custom flashlights
This isn’t a brightest flashlight in the world type of hack (but it does manage to push about 1000 lumens). [Stephen Webb] is finding a use for leftover parts by building his own simple LED...
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DIY Lighting Solutions
With daylight savings time starting up, you might not have quite as much need for lighting, but this pair of hacks should keep everything well lit whether outside or indoors. Check out the videos of...
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Giving a crank flashlight a super capacitor overhaul
[Caleb] was given a tiny LED flashlight which has a crank used to charge it. Unfortunately it wasn’t holding a charge, and constant cranking didn’t work very well either. He cracked it open to find a...
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Hack a Solar Garden Light Into a Flashlight
While browsing through his local dollar store, [Taylor] came across a suspicious looking rock that, upon closer inspection, turned out to be a solar garden light. He scooped it up, took it home and...
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Scratch-built Smart Flashlight
This flashlight has a face; one of the many tricks which [Hobbyman] included during the development process. The smart flashlight build turned out to be a great way to practice so many different...
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Hack a Mag-Lite to be Rechargeable
Most tools sport rechargeable batteries these days, but there’s no need to toss that old flashlight: just replace the cells with rechargable ones! [monjnoux] had a 3-cell D-sized MagLite lying...
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Deadbugged LED Strobe
[Steel 9] was looking around for a LED strobe light for reasons unknown. He couldn’t find any that he liked, and when that happened, he did what any normal person would do – make one himself. [Steel]...
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