Instructables
Sometimes, when i'm drilling a PCB with my dremel, it shadows all the area below, making my  job too difficult.
A long time ago i saw in Hack a day a light for macro in a camera and I thought it can be a good idea to use a led ring with the dremel to light up the working area under it.
 
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Step 1: Materials

For making a led ring you will need:
-Nine smd LEDs
-An old mobile charger (4.5-5.5v)
-One 15ohm resistor
- Male and female plug (optional, you can connect the charger dirctly in the PCB)
-The PCB, you can download the PCB stencil.

Step 2: The PCB

First of all, you have to print the PCB, (make sure it is the correct size for your LEDs and the dremel screw).
Then, cut the corners and file the outside edge.
Drill the center hole and make it bigger until tha dremel fits prfectly in it.
Then drill the holes for the female connector and the resistor and you have finished the PCB.
rim gritty6 months ago
best effin thing ever !!! thank you.

good gob my frend .work very well thank you

Rodney779910 months ago
I like your idea so much I searched Amazon for "Dremel Light". They have one that is very similar but with only 2 bulbs and it costs $55 dollars! I think I'm going to make your version. Outstanding work!
J-Five1 year ago
Cool!!!!

It sort of looks like a UFO!!
ccoalex1 year ago
Hi, nice work yet simple but how about power rating of the 15 ohm resistor ( from the image I say it`s a 1W resistor and NOT a common 1/4W ).
What is the voltage and current of the smd led you used?

If someone want to use STANDARD WHITE led should put a 45 ohm (or standard 43 ohm) 1/4W resistor for 4.5V or 95 ohm ( or standard 91 ohm)for 5.5V power supply.

Resistor value is :
R=(Vs-Vf) / If where Vs=SOURCE voltage, Vf=LED voltage, If=LED current (for WhiteLED If= 0.020A=20mA and Vf=3.6V);

"Wattage" P=I*I*R (for WhiteLED @4.5V is 18mW=0.018W and 1/4W resistor is more than enough). Hope this will help you somehow.
pinomelean (author)  ccoalex1 year ago
I used the 1w resistor because it was the only under 400ohm i had on hand.
And because i saw the LEDs were bright enough with it i didn't get a new 1/4w resistor because in my city shop they're about 0,60$ each one, so i try to use what i get from trash.
It was also because i didn't know how to calcule resistor for LEDs.
Attmos1 year ago
Really cool. I want one. Does it limit your dexterity, range of motion, or how you hold the Dremel in any way?
pinomelean (author)  Attmos1 year ago
Not really, i don't usually grab where the ring is placed.
ElZorro1 year ago
Now you should make an inductive version like the one that came with my Dremel.
ThaXified1 year ago
Easy, and effective! Nice!
mayagayam1 year ago
Great job!
kukubee1 year ago
Hi,

Could you please expand a bit about how you made the PCB?

Thanks and you did a very nice job!
pinomelean (author)  kukubee1 year ago
There are a few simple steps in this method :

1.Print out your design on a LASER Printer, An inkjet will not work, Glossy paper is the best to use (or use a page out of a magazine)

2. Place your Board design on your copper clad board & iron it on the hottest temperature for about five minutes, just to be sure all the toner has been transferred.

3. Place your board in cool water for a few minutes, Then rub the paper off. You should be left with the design on the copper clad board.

4. Etch the board. I use one part of hydrochloric acid diluted in five of hydrogen peroxide. it takes about 5 minutes to etch.

5. Once your board is etched, remove the left over toner. There are a few methods to do this. I use a mixture of steel wool (To get the toner off to a rough standard) then clean the board up with acetone to ensure there are no bits of toner on the board.
mmarchesi1 year ago
NICE! I'll try something similar but I have two questions:
1- why not to use traditional pin in hole led with a general purpose PCB? It should be easier then to use the SMD leds (and maybe cheap)
2- do you think is possible, stantring from a copper board to create the circuitry mechanically directly with the Dremel instead of doing the etching process?
pinomelean (author)  mmarchesi1 year ago
I have never used a general purpose PCB, but i think it'll be OK. About creating the circuitry mechanically directly with the Dremel i think i'ts much more difficult, etching the PCB is the perfect solution.
agis681 year ago
nice and easy project of an afternoon for lighting your jobs with dremmel......cool!!!
strooom1 year ago
Nice! Just got my Dremel today, Will build one for sure. I think I will take traditional LEDs which are not surface-mount, so you won't really need a PCB.

You could also connect them in series rather than parallel, requiring a power supply with a higher voltage (but lower amp rating). I think 12V are easier to find (read: recycle).
nice job!
This is one of those " I wish i would if thought of that things ".

Verry good!
dgateley1 year ago
Awesome also for a soldering iron if properly insulated thermally. How's about a kit? Or just a circuit board. I'll pay (within reason.) :-)
pinomelean (author)  dgateley1 year ago
A circuit board, the nine LEDs and the resistor will be 5$, but i live in Spain and i don't know how to ship it, the shipping costs and how to send money...
Me either, but if you figure it all out be sure and post back. I don't know about intranational usage but PayPal might be your solution for payment.
Orngrimm1 year ago
Cool idea! I like it and id like to improve on that...
In fact, i wanted to move the LED's on top of the ring you are holding @ http://www.instructables.com/files/deriv/FDQ/HV5X/HDYZI1B1/FDQHV5XHDYZI1B1.LARGE.jpg and use a smaller / a series of smaller PCBs. I have some ideas on how to make them angled AND circular. :)
This way the PCB wont get in my ways while holding the dremel.
Normally i hold the dremel where the PCB is now fixed...
find some tiny LEDs and put them inside the screw-on grip!
dulciquilt1 year ago
You should sell these to folks like myself who don't have the time to make them.
Patrik1 year ago
Nice execution!

However, since all the LEDs are in parallel, you should really have a separate current limiting resistor for each. Otherwise you'll drastically reduce the lifespan of whichever of the nine LEDs happens to have the lowest forward voltage.

If you put them all in series, you can get away with a single resistor, but then you're working with fairly high voltages. A good compromise may be to make strands of three LEDs in series with a resistor, and then to put three of those strands in parallel.
nerocon1 year ago
Fracking genious! can't believe I had not already done this.
Yes... this is very good for detail work on hard to see fine bits...

The even bright lighting around the tool is important.
jdelongpre1 year ago
You won't get a prize for new technology, but you have MY vote in the Lamps & Lighting contest for a useful instructable. Good work and thanks!
That is very nice.
BRILLIANT idea and execution! As was once so eloquently put -- "You're the man now, dawg!"
Phildem1 year ago
Very good idea and realisation !!
jolshefsky1 year ago
That's a pretty elegant-looking, simple, reliable circuit board!
ringai1 year ago
Very nice project. Be careful using an open flame to heat up shrink wrap. If you accidentally burn it, you'll need to unsolder the connection to fix it.