Art and Technology are Friends

Aurora 12 bar – Kit and PCB

Aurora 12 bar is a simple, straight line RGB LED sequencer/chaser. Aurora 12 bar’s hardware is almost identical to Aurora mini 18. In fact only difference are (besides their shapes) the number of LEDs and the microcontroller that they use. Oh, and Aurora 12 bar doesn’t use a single SMT (surface mount technology) part!

In addition to all the animations that other Aurora’s can do, Aurora 12 bar also has the analog input ready. By hooking up to Audio Interface, you can turn Aurora 12 bar into a full-color sound/VU meter!

Aurora 12 bar is made with 100% through-hole parts. No surface mount parts!

Kit Contents
12x RGB LED (common-cathode)
3x 2N2907A or equivalent Transistor
1x PIC24FV16KA301 Microcontroller (Preprogrammed with the latest firmware)
1x Tactile Switch
12x 120 ohm Resistor
3x 220 ohm Resistor
4x 2.2k or 2.7k ohm Resistor
1x 10k ohm Resistor
1x 0.1 uF Ceramic Capacitor
1x 10 uF Multi-Layer Ceramic Capacitor
1x 33 uF Electrolytic Capacitor
1x Aurora 12 bar PCB
* 3 pin Molex connector shown in some pictures come with Audio Interface, and is not included in Aurora 12 bar kit.

Note: All Aurora 12 bar kits ship with preprogrammed PIC. You do not need a PIC programmer to assemble Aurora 12 bar kits!

- Aurora 12 bar Schematics

- Assembly Guide

*** Purchase Here ***

12 Responses

  1. Ian

    Could the firmware on this be modified so that all the LED’s change simultaneously? I’d like to purchase one of these, as well as the audio interface; the number of bands is what makes it really super awesome; but I really want my LED’s to all change together.

    Somebody asked this previously as well.

    December 24, 2013 at 2:02 pm

  2. devin sikiric

    hey i just assembled my aurora 12 bar and its awesome but it wont show any green light like it did in the beginning when i first tested it. i was wondering if you could help me figure this out. thanks.

    November 27, 2013 at 8:16 pm

    • Check for shorts between the LED leads. Those are so close together that it’s so easy to short. Sometimes you can’t see the shorts with naked eyes, so use magnification.

      November 27, 2013 at 8:28 pm

      • devin sikiric

        what if every led only does blue? does that mean that they are all shorted in the same spot? or it it the resistors?

        November 30, 2013 at 10:30 pm

        • devin sikiric

          woops i meant if the leds do every color except blue

          November 30, 2013 at 10:31 pm

          • devin sikiric

            should i just replace the resistors?

            November 30, 2013 at 11:24 pm

            • Resistors are rarely broken. Again carefully check the soldering.

              December 1, 2013 at 1:13 pm

          • That’s a rare situation. Check the soldering around the transistors.

            December 1, 2013 at 1:12 pm

  3. Carlos

    What are the dimensions of the Aurora 12 Bar and the Audio Interface? Thanks.

    November 14, 2013 at 11:58 pm

  4. I’d like to use this or other controllers you make in a Lumia lightbox.
    1.can I run long leads between the LED’s and the board? so I can position the lights where I need them?
    2. Can this be run off a plug in power supply?
    3. Regarding programming the IC – I would just like a very slow, random color change across all 12 LED’s is this available?
    4. What is the lumen output of the LED’s that come with the kit and can brighter ones be used – up to what limit?

    Appreciate any information you can provide.

    Would be looking for at least 3 of these initially.

    Best Regards

    September 13, 2013 at 10:23 am

  5. Larry

    Can this device be reprogrammed to do different effects via serial ? Or any other possible way?

    I just bought one last night and was curious what all i could play with.

    Im really really looking forward to getting your kit in the mail. I can easily see myself buying few of each.

    Thank you for making such a awesome product !!!

    February 10, 2013 at 3:52 pm

    • Aurora 12 bar (or all of my PIC projects) has a ICSP (in-circuit serial programming) connection on the PCB, so you can re-program the PIC any time using PICKit, ICD or any compatible PIC programmers. I made the source code available so you can modify the code to do different things.

      In case you don’t have a PIC programmer, I recommend PICKit3, which is very versatile and cost effective.


      February 10, 2013 at 4:09 pm

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