# (Example 1) Controlling a Single LED
{% hint style="success" %}
The **HUENIT AI Camera** has a total of **50 LEDs**, numbered **from 0 to 49**.\
Each individual **LED consists of three components**:
* **R (Red)**
* **G (Green)**
* **B (Blue)**
💡 **R, G, and B values can be set between 0 and 255.**
{% endhint %}
#### **Example Code**
(Example) Turn on **LED #0** with **R: 200, G: 100, B: 100**
***
### :bell: **Block Explanation**
**1. \[ Set num ( ) LED as RGB : ( ) ] Block**
* This block is used to set **R, G, and B values** for a specific **LED position**.
✅ **(1-1) Setting Custom R, G, B Values**
* Users can manually input values **between 0 and 255** for **R, G, and B**.
✅ **(1-2) Using Predefined Colors**
* Instead of manually entering values, users can choose from **preset color values**.
***
**2. \[ LED On ] Block**
* This block **activates** the LED with the **assigned color settings**.
***
#### ​:warning:​**Important Notes**
* Only blocks **listed under the \[Start] block** in the **Event Block category** will be executed.
* **If the \[LED On] block is missing, the LED will not turn on.**
####
