ElecFreaks
8 RGB Rainbow LED Ring
The 8 RGB Rainbow LED Ring features 8 individually addressable RGB LEDs arranged in a compact circle. Each LED has a built-in driver chip with 18 mA constant...
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The 8 RGB Rainbow LED Ring features 8 individually addressable RGB LEDs arranged in a compact circle. Each LED has a built-in driver chip with 18 mA constant-current drive, so brightness remains consistent regardless of voltage variations — no external resistors needed.
The ring is chainable, allowing you to connect multiple rings together using a single data line. Power the ring with 5V DC (4–7V range) and control it from any real-time microcontroller running at 8 MHz or faster, such as Arduino, micro:bit, or PIC.
Key Features
- 8 Addressable RGB LEDs – Individual colour control for each LED
- Chainable – Connect multiple rings via a single data line
- Constant-Current Drive – 18 mA per LED, no external resistors required
- Single-Wire Protocol – One microcontroller pin controls all LEDs
- Compact Form Factor – 32 mm outer diameter, 16 mm inner diameter
- 5V Operation – Works within 4–7V range
Ideal For
- Wearable electronics and LED jewellery
- Status indicators and notification rings
- Interactive art installations
- micro:bit and Arduino LED projects
Package Contents
- 1× 8 RGB Rainbow LED Ring
Jargon buster
Plain-language definitions for the technical terms used above.
- AVR
- AVR is a family of 8-bit microcontrollers (made by Microchip, formerly Atmel) used in many classic Arduino-style boards such as the Uno and Nano. They are widely supported but older, which can be a limit for memory- or speed-intensive tasks.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
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