> For the complete documentation index, see [llms.txt](https://docs.idew.org/code-internet-of-things/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.idew.org/code-internet-of-things/tutorials/create-smart-light/3.1-connect-led.md).

# C-1 Connect LED

LEDs (light-emitting diodes) are small, bright, long-lasting, energy-efficient lights. Your Photon kit has a set of LED lights with different bulb colors:  red, yellow, green, and blue.

In this first step, your team will connect an LED light to your Photon circuit board using the breadboard.

You'll need these components:

* 1 LED light (any color)
* 1 resistor
* 2 jumper wires (use two different colors to help identify them)

[Follow these instructions explaining how to connect the LED](https://docs.idew.org/code-internet-of-things/references/physical-outputs/led-lights).  The LED can be connected to almost any I/O pin, but connect it to the **D0** pin (which will match the wiring diagram).

![LED (with resistor) connected to Photon](/files/-LJFWOFvlth5QJiDslHi)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.idew.org/code-internet-of-things/tutorials/create-smart-light/3.1-connect-led.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.