Lithophane Lamp Has Us Over The Moon

May 21, 2021 by Lewin Day 7 Comments

Lithophanes are artistic creations which rely on the varying thickness of a material that is then backlit to reveal an image. While these were often made in porcelain in the past, these days we have the benefit of 3D printing on our side. The principle can be deftly applied to everything from flat planes to spheres, with [Tiffany Lo] demonstrating a great application of the latter with her 3D printed moon lamp.

The basic concept is to take a 2D image of the lunar surface, and then use it to generate a height mapped sphere for 3D printing. When lit from within, the sphere will appear as per the surface of the moon. The sphere geometry was generated with the Lithophane Sphere Maker online tool combined with NASA data of the moon intended for computer graphics purposes. The sphere was then printed on a typical FDM printer before being assembled upon a base with LEDs inside for backlighting.

The result is an attractive moon lamp that both recalls the heavy rock that follows us in a tidally-locked orbit, and yet can be switched off at night to make it easier to sleep. Unfortunately, it’s impractical to turn off the shine from the real moon, and we suspect nobody is working on the problem.

We’ve seen other moon lamps before; they’re a great starting point because the moon’s greyscale tones work well as a lithograph. More advanced techniques are likely necessary for those eager to create lamps of the gas giants; if you’ve done so, be sure to drop us a line.

Lamps Double As Secret Surround Sound Speakers

April 28, 2021 by Tom Nardi 23 Comments

Combined with today’s massive flat panel displays, a nice surround sound system can provide an extremely immersive environment for watching movies or gaming. But a stumbling block many run into is speaker placement. The front speakers generally just go on either side of the TV, but finding a spot for the rear speakers that’s both visually and acoustically pleasing can be tricky.

Which is why [Peter Waldraff] decided to take a rather unconventional approach and hide his rear surround sound speakers in a pair of functioning table lamps. This not only looks better than leaving the speakers out, but raises them up off the floor and into a better listening position. The whole thing looks very sleek thanks to some clever wiring, to the point that you’d never suspect they were anything other than ordinary lamps.

The trick here is the wooden box located at the apex of the three copper pipes that make up the body of the lamp. [Peter] mounted rows of LEDs to the sides of the box that can be controlled with a switch on the bottom, which provides light in the absence of a traditional light bulb. The unmodified speaker goes inside the box, and connects to the audio wires that were run up one of the pipes.

In the base, the speaker and power wires are bundled together so it appears to be one cable. Since running the power and audio wires together like this could potentially have resulted in an audible hum, [Peter] only ran 12 VDC up through the lamp to the LEDs and used an external “wall wart” transformer. For convenience, he also put a USB charging port in the center of the base.

When speakers or surround sound systems pass our way, it’s usually because some hacker has either made a set from scratch, or has added some new and improved capabilities to their existing gear. This project may be a bit low-tech compared to some that have graced these pages, but it’s undoubtedly a clever and unexpected solution to the problem, and that’s a hack in our book.

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Cassette Lamp Is A Throwback To The Pencil-Winding Glory Days

March 17, 2021 by Lewin Day 18 Comments

The audio cassette was the first music format that truly championed portability. It was robust, compact, and let people take music on the go to soundtrack their very lives. It was later supplanted by the higher-quality CD and then further digital technologies, but the format remains a nostalgic highlight for many. It also inspired this excellent lamp build from [Fab].

The lamp consists of 8 clear cassettes assembled into a rough cube-like shape on a 3D printed frame. The cassettes are edge-lit from below by a set of WS2812B LEDs, letting them glow in full-color splendour. The real magic of the lamp is the interface, however. A pencil can be inserted to turn the tape reels, just like rewinding a real cassette. However, in this case, they’re attached to a pair of rotary encoders, which are used to vary the color of the LEDs. As a bonus, the entire lamp runs off a Wemos D1, making it possible to update the lamp remotely over the Internet.

It’s a stylish build that would make an excellent conversation piece in any hip maker’s loungeroom. It’s a great nod to the creator of the compact cassette, [Lou Ottens], who passed away earlier this month. Video after the break.

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Custom Firmware For IKEA’s ORSALA Lamp

February 17, 2021 by Lewin Day 29 Comments

These days, home appliances are equally as likely to have soft buttons and rotary encoders as they are to have a simple old clunk/clunk power switch and an analog knob for controls. This is all well and good if the device aligns with your personal philosophy about how such controls should work; otherwise, it’s absolutely maddening. [j-zero] ran into this problem with their ORSALA lamp from IKEA, and set about rectifying the problem with some custom firmware.

The ORSALA lamp uses a rotary encoder for setting both brightness and color temperature, with a button to toggle modes. A long press is required to switch the lamp off. The custom firmware modifies this behaviour, such that the lamp can be switched on and off with a simple button press. Turning the encoder modifies brightness, and turning it to minimum switches the lamp off too. Meanwhile, the less commonly used color temperature setting can be modified by using the button while adjusting the encoder.

The hack was executed by reprogramming the ORSALA’s onboard microcontroller, the STM8S003F3P6, via its SWIM interface. The pads for the interface are easily located on the board, making the hack easy. Other than the inputs, the lamp packs separate TTP932 LED drivers for the warm white and cool white LEDs, making it easy to code a custom firmware to handle all the necessary functions.

It’s a great example of a hacker taking control of their own device and remaking it to suit their needs. Of course, if you want to go for another hacker trope, just stuff a Raspberry Pi in there instead!

The Bright Side Of The Moon Lamp: It’s Any Colour You Like

February 8, 2021 by Kristina Panos 6 Comments

One of the easiest ways to get into hardware hacking is by piecing together a few modules and shoehorning them into a really cool home. For example, why buy a commercial moon lamp when you can spend 30+ hours printing your own, and a few more hours hacking the guts together?

[Amit_Jain] was inspired by a project that combined a color map and bump map of the moon into a highly-detailed printable model. Displeased with the lack of features like portability and pretty colors, [Amit] took it to the next level by designing a threaded cap that unscrews to show the streamlined guts of an off-the-shelf RGB LED controller.

[Amit] freed the controller board from its plastic box and soldered the LED strip’s wires directly to it. For power, [Amit] taped the board to the battery from an old cell phone and stepped it up to 12 V with a boost converter. We think this looks quite nice and professional, especially with the stand. A brief demo is on the rise after the break.

If you’ve got the room for a much, much larger light-up moon, you should go for it.

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LEDs From Dubai: The Royal Lights You Can’t Buy

January 17, 2021 by Al Williams 103 Comments

[Clive] had an interesting video about LED lights from Philips. You can’t buy them unless you live in Dubai. Apparently inspired by the ruler of Dubai, Sheikh Mohammad Bin Rashid Al Maktoum, who wanted more efficient and longer-lasting bulbs. The secret? A normal LED bulb uses an LED “filament” at 1 watt each. The Dubai bulbs run at about a fourth of that which means they need more LEDs to get the same amount of light, but they should last longer and operate more efficiently.

After exploring the brightness and color of different lamps, [Clive] tears one up and finds some surprises inside. The LEDs get over 200V each and the driver circuit has a lot of pairs of components, possibly to keep the size small for the high voltages involved, although it could be to improve reliability, [Clive] wasn’t sure.

By reducing the power, [Clive] was able to count that each LED strip contains 21 LEDs. He also notes some of the oddities in construction that appear to be for reliability and ease of manufacturing. We aren’t sure how that compares to the construction of conventional bulbs. The circuit includes a bridge rectifier and a linear current regulator using a MOSFET.

The bulbs cost a bit more, but if you factor in the probable long life, their total cost over time should be reasonable. Overall, it is interesting that a nice design came from what amounts to government regulation. Of course, there is a price: in exchange for the development of the bulbs, Philips has the exclusive right to make and sell the bulbs for the next several years. They expect to sell 10 million lamps by the end of 2021, although they are only available, currently, in Dubai.

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3D Printed Workshop Lamp Uses A Few Neat Tricks

November 4, 2020 by Lewin Day 18 Comments

As far as light fittings go, store bought is fine, but it’s hard to beat something you’ve built yourself from the ground up. [Heliox] demonstrates this well, with a 3D-printed workshop lamp that looks the business and is functional, too.

The lamp has plenty of neat design touches that speak to [Heliox]’s experience in the 3D printed arts. The articulating arms are modular, and feature integrated cable guides. The lamp base features nuts inserted mid-print for easy assembly, and the swivel is actually a two-piece mechanism printed as a single assembly. The table clamp uses a large screw, and the benefit of 3D printing means its easy to customise to suit any individual table. Using black and orange filaments gives the lamp a proper industrial look, and the bright LED strips are perfect for illuminating a bench for fine detailed work.

It’s a great addition to [Heliox]’s workspace, and the tall articulated design means it can cast light without getting in the way of what you’re doing. We’ve featured her work before, too – like this glorious infinity cube. Video after the break.

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