Hello and Welcome! If you have a technical question please check out our Forums. If you have an order or shipping question please refer to our Customer Support page. Please see all COVID-19 updates here and thank you for your continued support.
SparkFun will be closed on Tuesday, November 3rd because we are out voting! Orders placed after 2 pm MT Monday, November 2nd will ship on Wednesday, November 4th.
This is the three inch version of the SparkFun LuMini LED Ring, packed with 60 individually addressable LEDs, each capable of producing 16 million colors, it provides you with a lot of color for just about any reason! LuMini is a miniaturized version of our Lumenati LED line but instead of utilizing 5mm by 5mm APA102 LEDs (APA102-5050), LuMini uses a 2mm by 2mm package (APA102-2020). This allows for incredibly tight pixel densities, and thus, a more continuous ring of color for you to use!
The LuMini LED Ring is powered and controlled using a few solder pads on the back of each board. These pads include 5V and ground, a set of pads for data and clock input, and another set for data and clock output. Since the ring acts like a string of LEDs, you'll find multiple numbers silked onto the back of the board that correspond to the LED number in the above. The last handy feature we've equipped the LuMini LED Ring with is eight detachable mounting points (four inside the ring and four outside) that can be used to secure your ring to a surface/project or be broken off to make more complex designs.
Note: In larger installations you may need to add a decoupling capacitor between power and ground to prevent voltage dips when turning on a whole bunch of LED’s simultaneously. We recommend using a 4.7µF capacitor which we sell in strips of 10.
This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.
Skill Level: Competent - You will encounter surface mount components and basic SMD soldering techniques are required.
See all skill levels
If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
See all skill levels
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
See all skill levels
Based on 5 ratings:
Works great with FastLED library.
The 3in, 2in, and 1in do not easily nest within each other without removing tabs. The 6 pads for data/clock/v+/gnd are not on 0.1 inch centers so you cant put smd header pins on :(
I purchased this to attach to my SLR lens to play with different illumination. I guessed that the "3 inch" might have been the inside diameter not as I discovered, the outside diameter. The lens I planned to attach the ring to is 67mm. The ring has an ID of 66mm. In the future please add the geometric dimensions to the product "Features".
This is a fantastic LED ring that is useful for a lot of applications from camera illuminators to Clocks. I am using this for an Arduino (ESP32 actually) clock project that supports both WiFi and bluetooth for either configuring (Bluetooth) or updating the time (Wifi) via the National US Navy Clock standards. The ring is very compact which enhances applications where either direct or diffused light is needed. Very please that this is available as the alternative 1/4 15-segment LED rings from Adafruit are too large for most applications.... Love this one
Great little light ring except, I wish it was manufactured clockwise instead of counter clockwise. I am having one hell of a time figuring out code to make it run clockwise for my clock project