# (Example 2-1) Controlling LED in Custom Shapes - Basic
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With the blocks shown above, you can **easily control** the **LEDs at specific positions**.
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#### **Example Code**
(Example) **Turn on LEDs in a Heart Shape** with **R: 250, G: 150, B: 150**
Heart-shaped LED Number
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### :bell: **Block Explanation**
**1. \[Set to LED ( ) Shape] Block**
* This block **assigns colors** to specific **LED positions**.
#### **💡 How to Use the Block**
✅ **(1) Modifying the LED Layout**
* Click on the **black squares** to adjust the LED pattern.
* **Three options are available:**
* **\[COLOR]** → Set a color for specific LEDs.
* **\[ERASE]** → Remove colors from selected LEDs.
* **\[CLEAR]** → Reset all LEDs.
✅ **(2) Selecting a Color**\
Click the **\[COLOR]** button to choose a color.
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There are **three ways** to define colors:
1️⃣ **Using Sliders:**
* Adjust the **R, G, B sliders** to set the desired color.
2️⃣ **Directly Entering R, G, B Values:**
* Input numerical **R, G, B values (0-255)** for precise color selection.
3️⃣ **Using Predefined Colors:**
* Click one of the **five preset colors** below to apply it instantly.
* Predefined colors can be **modified using sliders or manual R, G, B inputs**.
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**(3) Assigning the Color to LEDs**
* Once the color is set, **click the desired LED positions** to apply the color.
