Inexpensive Ring Light Makes Macro Photos Easy

[edyb] uses his relatively inexpensive Cannon camera quite a bit. However, in dark areas or extreme closeups, the camera’s image quality leaves something to be desired. [edyb] hopped on the ‘net and found out that a ring light may cure his photo faux pas. Ring lights are nothing new but nothing existed for his lower-end point and shoot camera. With a USB-powered lamp and a spare AA battery pack kicking around, [edyb] decided to make his own.

First, the USB lamp was disassembled, luckily the LEDs were already laid out in a ring shape. The clear protective housing and gooseneck were discarded and the remaining PCB ring was glued directly to the camera. A female USB jack was then glued to the top of the camera and soldered to the two leads connected to the lamp’s PCB. The AA battery holder received a small switch and a male USB plug, also courtesy of a few dabs of glue. The now-assembled battery pack plugs directly into the camera via the USB connector and is its only method of attachment.

DIY Camera Light RingThe utilitarian modification may look crude but the results are anything but. Check out this close-up macro shot of a Canadian penny. Not too bad.

[edyb] has done some similar mods to other cameras, attaching components with magnets and even using an old Blackberry battery to power the LEDs showing that there is no one way to solve a problem. Check out the video after the break…

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Light Ring Allows Precise Dremeling

Whether you are working at home, in the office or in the shop, proper lighting is pretty important. Not having proper lighting is a contributor to fatigue and visual discomforts. Prolonged straining of the eyes can result in headaches, eye twitching, blurred vision and even neck pain. [pinomelean] likes to make chemically etched PCB boards and he was having a hard time seeing while drilling those boards for the through-hole components. So, he did what any good hacker would do and came up with a solution: a light ring for his Dremel.

Yes, [pinomelean] does prefer to drill his PCB holes by hand with a Dremel. Since he was already a competent PCB board maker, he decided that it would be an appropriate method to make a light ring. The light ring itself is round with a center hole just over 0.750″ in diameter. This hole slides over the 3/4-12 threaded end that most Dremels have for attaching accessories. The stock Dremel decorative  ‘nut’ secures the light ring PCB to the tool. There are pads for 9 surface mount LEDs and through holes for a current-limiting resistor and pins to connect a power supply, which in this case is an old phone charger. In the end the project worked out great and [pinomelean] can clearly see where those holes are being drilled!

If you’re interested in making one of these light rings, [pinomelean] graciously made his board layout available in his Instructable. If you think one would go well with a soldering iron, check this out.

Microscope ring light with a number of different features

microscope-ring-light

Microscopes magnify light. It makes sense that having more light reflecting off of the subject will result in a better magnified image. And so we come to Aziz! Light! It’s [Steve’s] LED light ring for a stereo microscope. It’s also a shout out to one of our favorite Sci-Fi movies.

He’s not messing around with this microscope. We’ve already seen his custom stand and camera add-on. This is no exception. The device uses a fab-house PCB which he designed. It boasts a dual-ring of white LEDs. But the controls don’t simply stop with on and off. He’s included two rotary encoders, three momentary push switches, and three LEDs as a user interface. This is all shown off in his demo video after the break.

An ATtiny1634 is responsible for controlling the device. When turned on it gently ramps the light up to medium brightness. This can be adjusted with one of the rotary encoders. If there are shadows or other issues one of the push buttons can be used to change the mode, allowing a rotary encoder to select different lighting patterns to remedy the situation. There are even different setting for driving the inner and outer rings of LEDs.

We haven’t worked with any high-end optical microscopy. Are these features something that is available on commercial hardware, or is [Steve] forging new ground here?

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Brighten up your PCB drilling station

Being able to see what you’re doing can be the hardest part of drilling the through holes in those freshly etched printed circuit boards. We don’t know why we didn’t come up with this, but [Markus Gebhard] solved his shadowy woes with his 20-LED Dremel light ring. Honestly, how many times have we seen lights rings in photography without putting it together that a light ring is perfect for this purpose. So kudos to [Markus], now we’ve got to go and dig up some surface mount LEDs and uncork the copper chloride.