GreatScott! LED Color Organ PCB Kit

Following the success of our partnership with GreatScott! and the launch of the GreatScott! LED Color Organ Kit, we’re happy to introduce the new PCB version of this kit.  With some careful thought and consideration, we’ve come up with a version that is more practical, easier to build,  visually appealing, and flexible in how you choose to use it. GreatScott! LED Color Organ PCB v1.0 You can find these kits here:


After re-evaluating the stripboard version, we realized there was room for improvement.  So here’s what we’ve come up with: greaGreatScott! LED Color Organ PCB v1.0

  • Onboard 5V Voltage Regulator - The PCBs come with a SMD L7805CDT 5V 1A voltage regulator (Datasheet) already mounted that provides power to your Arduino and the MSGEQ7 IC. GreatScott! LED Color Organ PCB v1.0 - Voltage Regulator
  • 2.5A Resettable Fuse - The PCBs also come with a MF-MSMF250/16X Bourns 2.5A resettable fuse (Datasheet) to help prevent damage to your power supply if you have a short in your LED wires, etc.GreatScott! LED Color Organ PCB v1.0 - Fuse
  • Connect directly to Arduino NANO or Arduno UNO – We’ve designed this to directly connect to your Arduino Nano or Arduino UNO without any jumper wires.  If using an Arduino Nano, simply attach the included 1×15 female header pins and then plug your Arduino Nano (Nano not included) into them, as shown below: greaGreatScott! LED Color Organ PCB v1.0 with Arduino Nano header pinsgreaGreatScott! LED Color Organ PCB v1.0 with Arduino Nano connected If using an Arduino Uno, solder the included male header pins to the outside solder pads and it will fit on your Arduino UNO (UNO not included) as a shield. GreatScott! LED Color Organ PCB v1.0 - attached to UNO as a shield We’ve also included the 1×8 female header, like the one in our stripboard kit, so you can connect it via jumper wires if you prefer that method. This allows you to connect it to other Arduino models as well. GreatScott! LED Color Organ PCB v1.0 with 1x8 Header Pin Connection
  • Mounting Holes For Standoffs – If you are using this with a NANO or with the 8-pin header, you might want to put some M3 standoffs on it to give it some space and keep the bottom of the board from touching/scratching your surface area.


Part Changes

Parts are always subject to change based on availability, pricing, etc. and we’ve made a few changes to the parts for this kit.  This, however, doesn’t affect the performance of the kit and it will perform exactly the same.  With that being said, we’ve changed the MOSFETs to STP16NF06L (Datasheet), which are directly replace the BUZ11s in this application.  We’ve changed the WIMA polybox capacitors to TDK MLCC capacitors, which are also blue and compact.  We’ve also changed the resistors from the green round ones to the nice white block-shaped ones, which are easier to mount to a heatsink, etc. should you choose to do so. Again, these changes do NOT affect the performance of the kit and helps keep our costs lower without jeopardizing quality.

How To Build It

Your kit will arrive with all of the parts labeled.  As you can see in the photo, the circuit board is clearly labeled, so simply install the parts as they match the labels on the circuit board.  GreatScott! may make a video tutorial of this soon, in which case we’ll be sure to add a link here to it.  If you need any help, just contact us and we’ll be glad to assist you. TIP: Using the IC Socket – The MSGEQ7 IC comes with a DIP-8 socket and we highly recommend using it instead of soldering the IC directly to the PCB.  This helps prevent damage from heat while soldering and also makes the IC reusable, should you decide to tinker with it in another project.

How To Use It

Once you’ve assembled it, carefully look over your solder joints and make sure you didn’t short anything.  Some of the vias are close to the solder pads and it may cause damage to your Arduino if you soldered them together. If you are connecting it to an Arduino Nano, then go ahead and plug your Nano in as shown in the above photo.  If using the an Arduino UNO, attach it to your UNO like a shield.  Load the GreatScott! Color Organ LED sketch (you can download it from onto it, disconnect your USB, then attach an adequate power supply to the DC jack on the GreatScott! Color Organ PCB, then your music and it should work.  Do NOT try using the DC jack on the UNO, because it won’t work. !! IMPORTANT !! There is NO reverse-polarity protection on the PCB!  The correct polarity should be center-positive, meaning the inside of your plug should be positive and the outside the negative.  You might find a polarity symbol on your AC adapter, which the correct one will look like this: positive polarity

Learn More About It

If you want to learn more about this, be sure to check out the GreatScott! Instructable and his Youtube video, where he explains how it works in greater detail.  You might also check out his other tutorials, where you can learn all sorts of neat things about electronics and build all sorts of neat and useful gadgets. Instructables – How to build your own LED Color Organ || Arduino || MSGEQ7 Youtube – BUY A KIT

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