# Grove Circular LED

![](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/img/Circular_LED.jpg) This is a unique ring– it has a florid body with 24 controllable LEDs. Maybe it will drive the inspiration out of you to make a glowing magic ring! There is a 1\*1 square hollow-out in the middle of this module, where you can place a Grove Encoder in and make it a rotary visual encoder!

## Features

* Circular shape
* 24 LEDs, about 5.5 mA drive current for each channel.
* Controllable LEDs with florid effects
* Grove Interface.

## Schematic

![](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/img/Circular_LED_schmatic.jpg)

## Specification

| Item       | Min                    | Typical          | Max | Unit |
| ---------- | ---------------------- | ---------------- | --- | ---- |
| Voltage    | 4.5                    | 5                | 5.5 | VDC  |
| Current    | /                      | 5.5 for each LED |     | mA   |
| Dimension  | Ring Form:4.5 diameter | mm               |     |      |
| Net Weight | 12                     | g                |     |      |

## Interface

![](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/img/Circular_LED_Interface.jpg)

## Usage

### Hardware

With the definition "CircularLED circularLED1(10,9);" in the demo, please connect this module to the D9 Grove Connector of [Grove base shield](https://app.gitbook.com/Base_shield_v2) with the 4- pin Grove cable. You can also connect the "Yellow" signal to D9 and "White" to D10 with jumper wires.

### Software

Please download the CircularLED lib and test this module with*CircularLEDtest* example. You can click [here](https://app.gitbook.com/Upload_Code) to learn how to upgrade the sketches.

![](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/img/Circular_LED_shining.gif)

Please also refer to the [Grove-Encoder](https://app.gitbook.com/Grove-Encoder) to learn more about this module.

## Source

* [CircularLED Library](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/res/CircularLED.zip)
* [Grove Circular LED schematics PDF File](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/res/Circular_LED_v0.9b.pdf)
* [Grove-circular LED eagle files](https://github.com/SeeedDocument/Grove-Circular_LED/raw/master/res/Grove-circular_LED_eagle_files.zip)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://learn.pakronics.com.au/seed-studio/grove-modules/display/grove-circular_led.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.