# LED Strip Configuration

This documentation aims to explain all of the settings in the LED Strip Configuration dialog, so you can make the most use of them.

| Setting           | Value Type | Explanation                                                                                                                                                                                                                                                                     |
| ----------------- | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Strip Type        | Selection  | The type of strip you have connected, for a complete list see supported hardware                                                                                                                                                                                                |
| Max Brightness    | Percentage | The maximum brightness the strip should reach in any effect.                                                                                                                                                                                                                    |
| Number of LEDs    | Number     | I hope this one is obvious enough 🙂                                                                                                                                                                                                                                            |
| GPIO Pin          | Number     | The pin that the LEDs are connected to. This should be BCM [GPIO 10](https://pinout.xyz/pinout/pin19_gpio10) for normal operation, other pins are available when OctoPrint is run as root and can use PWM - though this is explicitly **not recommended** for security reasons. |
| Frequency         | Number     | Frequency to drive the LEDs at. This should be 800 000 in normal use, some older strips may require different values.                                                                                                                                                           |
| DMA Channel       | Number     | <p><em>(Not available in the UI)</em></p><p><strong>Do not change the DMA channel if you do not know what you are doing.</strong></p><p>This should be 10 in normal use, other values can cause severe problems.</p>                                                            |
| Invert Pin output | Checkbox   | Invert the signal from the Raspberry Pi. Useful if your setup uses a level shifter that inverts the signal, it can be inverted again to make it the right way around in the end.                                                                                                |
| PWM Channel       | Number     | <p><em>(Not available in the UI)</em></p><p>Internal PWM Channel. Irrelevant to the plugin since it uses SPI in most cases.</p>                                                                                                                                                 |

{% hint style="warning" %}
DMA Channel and PWM channel will remain available for editing using config.yaml, just in case you need to change this. You probably won't.
{% endhint %}