This example demonstrates how to blink a LED using GPIO or RMT for the addressable LED, i.e. [WS2812](http://www.world-semi.com/Certifications/WS2812B.html).
See the RMT examples in the [RMT Peripheral](../../peripherals/rmt) for more information about how to use it.
## How to Use Example
Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
* Set the GPIO number used for the signal in the `Blink GPIO number` option.
* Set the blinking period in the `Blink period in ms` option.
### Build and Flash
Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
(To exit the serial monitor, type ``Ctrl-]``.)
See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
As you run the example, you will see the LED blinking, according to the previously defined period. For the addressable LED, you can also change the LED color by setting the `led_strip_set_pixel(pStrip_a, 0, 16, 16, 16);` (LED Strip, Pixel Number, Red, Green, Blue) with values from 0 to 255 in the `blink.c` file.
