Grove - Circular LED
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
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 | cm | ||
| Net Weight | 12 | g | ||
Interface
Getting Started
Materials required
| Seeeduino V4.2 | Base Shield | Grove - Circular LED |
|---|---|---|
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| Get ONE Now | Get ONE Now | Get ONE Now |
In addition, you can consider our new Seeeduino Lotus M0+, which is equivalent to the combination of Seeeduino V4.2 and Baseshield.
**1** Please plug the USB cable gently, otherwise you may damage the port. Please use the USB cable with 4 wires inside, the 2 wires cable can't transfer data. If you are not sure about the wire you have, you can click [here](https://www.seeedstudio.com/Micro-USB-Cable-48cm-p-1475.html) to buy
**2** Each Grove module comes with a Grove cable when you buy. In case you lose the Grove cable, you can click [here](https://www.seeedstudio.com/Grove-Universal-4-Pin-Buckled-20cm-Cable-%285-PCs-pack%29-p-936.html) to buy.
Hardware Connection
Step 1. Connect the Grove - Circular LED with the D6 port of the Base Shield.
Step 2. Plug Grove - Base Shield into Seeeduino.
Step 3. Connect Seeeduino to PC via a USB cable.
If we don't have Grove Base Shield, We also can directly connect Grove - Circular LED to Seeeduino as below.
| Seeeduino | Grove - Circular LED |
|---|---|
| 5V | Red |
| GND | Black |
| D7 | White |
| D6 | Yellow |
Software
If this is the first time you work with Arduino, we strongly recommend you to see [Getting Started with Arduino](https://wiki.seeedstudio.com/Getting_Started_with_Arduino/) before the start.
- Step 1. Download the Grove - LED Bar Library from Github.
- Step 2. Refer How to install library to install library for Arduino.
- Step 3. Open Arduino IDE -> File -> Examples -> Grove_LED_Bar -> BasicControl
- Step 4. Uncomment the define MY9221_LED_NUM 24 and comment #define MY9221_LED_NUM 10 as below.
//#define MY9221_LED_NUM 10
#define MY9221_LED_NUM 24
- Step 5. Upload the example to Arduino. If you do not know how to upload the code, please check how to upload code.
- Step 6. You can see the led is running from .C, 23 and AB repeatly.
Play with Codecraft
Hardware
Step 1. Connect a Grove - Circular LED to port D5 of a Base Shield.
Step 2. Plug the Base Shield to your Seeeduino/Arduino.
Step 3. Link Seeeduino/Arduino to your PC via an USB cable.
Software
Step 1. Open Codecraft, add Arduino support, and drag a main procedure to working area.
If this is your first time using Codecraft, see also [Guide for Codecraft using Arduino](https://wiki.seeedstudio.com/Guide_for_Codecraft_using_Arduino/).
Step 2. Drag blocks as picture below or open the cdc file which can be downloaded at the end of this page.
Upload the program to your Arduino/Seeeduino.
When the code finishes uploaded, you will see the LED run in the circular.
Schematic Online Viewer
Source
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