Bi-color 5mm Led Ring (DIY)





Introduction: Bi-color 5mm Led Ring (DIY)

here are the instructions to make a bi-color led ring !

Step 1: Materials

For this project you will need:

-transparent tubing (inside diameter:3.5mm and outside diameter:5mm)

-3mm led (here red)

-5mm led (here blue)

-4mm black heat shrinking tube

-8mm black heat shrinking tube

-three wires (here black, blue and red)

-tin wire

+ a soldering iron and a lighter

Step 2: The 3mm Led

Take the 3mm led and bend the legs as on the picture with a spacing of 5mm then place a piece of 4mm heat shrink tubing and place the transparent tube around that. then solder the black wire to the negative leg of the led

Step 3: The 5mm Led

Place the 5mm led below the 3mm one and solder the black wire to the negative leg of this one too. solder the two other wires to the positive legs of both led (as shown on pictures).

Step 4: Finish

Now you have to insulate the exposed wires and place the 8mm shrinking tube around the whole thing to keep all the elements in place.

So now you have a "common cathode" bi-color ring led !

you can personnalize it as you want: change the colors or make it "common anode".

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    30 Discussions

    instead of using a standard two-color led (red/green) , use that one to give to your project a nicer look :)

    Well in that case I challenge you to do it with 2 rgb leds, one for each ring! ;)

    Eu utilizo, um similar, como iluminação traseira para minha moto.

    I can see this being great for more compact projects. I'm thinking of when I build guitar effect pedals, I could have the 3mm indicating the pedal was engaged and the outer ring showing when another function (boost, eq selector etc) was on. Nice idea OP!

    I've had several situations where I have push button LED switches where it would be useful to know that the power was on and then the switch had been pressed

    As an addendum, could the author edit the text to say 'solder' rather than 'weld' - the latter is a very different process.

    noted I will modify that !

    The use of a second colour can be used to mask the first therefore, in some cases helping project the main colour more (in the case of a light panel it would boost the perception of the light). In other places the combination of the two colours can help create the perception of other colours being present.

    The possibilities abound, how about 3, 5 and 10mm RGB led's?


    19 hours ago

    You can use transparent leds, they should work better.

    1 reply

    yes they are more powerful, but if we only want led to indicate something, these ones are just fine :)


    19 hours ago

    Great way to indicate four different states in in a compact package.

    1 reply

    Thank you for an excellent idea, execution, and Instructable! I look forward to attempting to scale this to 3mm/5mm/10mm RGB LEDs for some rad effects. Keep up the great work!

    1 reply

    good idea ! let me know if you make it :D and it could be nice if you can post a picture in "I made it !"

    thank you

    What is the lumen output of the creation, also what type or resistors are you using.

    Also have you looked at the possibility to have an on/off feature, therefore to symbolize and on position vs an off or standby?

    1 reply

    Hi I don't have luxmeter so I don't know, but it's approximately the same power as a standard led :)
    the resistors and the on/off feature will be integrated to the circuit, not to the led itself.
    I hope I answered your question,