> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# RGB LED 'OWire' - 2 Pin PTH 4mm Concave

**Type:** Product page · **SKU:** COM-21209 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/rgb-led-owire-2-pin-pth-4mm-concave.html ([markdown](https://core-electronics.com.au/rgb-led-owire-2-pin-pth-4mm-concave.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: COM-12999.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/COM-12999

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Have you ever seen those strings of fairy lights, or pre-lit Christmas trees, that change colors with a little remote? Have you ever noticed that they only have two wires? How do they do that? Well it turns out that this is how: Special LEDs! These 4mm LEDs are like a compromise between color cycling LEDs and fully addressable LEDs. While you aren't able to individually address each LED in the chain, you *can* change the color and mode of *all* LEDs in the chain. Sparkfun call these "OWire" LEDs because there's no "signal" wire, just power and ground. In order to change modes you wiggle the power LED in in a 7-bit pattern depending on the mode/color you want. Don't worry, we've written an Arduino library! A single LED will run just fine from a GPIO pin, but if you want to put a lot of LEDs in parallel, you'll want to use a MOSFET to signal the power rail. Check the documents for an example schematic.

 Features - 4mm PTH LED with Concave Lens
- 2 Pins
- Forward Voltage: 3.2VDC
- 8 Modes and 7 colors (plus color combos)
 
 Documents - [OWire LED Datasheet](https://core-electronics.com.au/attachments/localcontent/0-Wire_RGB_LED_Datasheet_29684935431.pdf)
- [OWire LED Signaling Protocol](https://core-electronics.com.au/attachments/localcontent/CZineLight_0-Wire_Communication_Protocol_1445002e9eb.pdf)
- [Arduino Library](https://github.com/sparkfun/SparkFun_OWire_Arduino_Library)
- [Example Schematic](https://core-electronics.com.au/attachments/localcontent/OWire_Example_30045ab5e61.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/O/COM-21209-1.jpg)