Activity No. 1: Lighting a led (Starter kit Vittascience)

The Grove Neopixel RGB LED module consists of an LED whose color can be chosen by the user. The denomination RGB refers to the three primary colors: R (red - red) / G (green - green) / B (blue - blue). This module therefore consists of a set of three tiny LEDs that can be lit at the same time to form different colors (orange, yellow, purple, etc.) 

To make this LED work using the NUCLEO-L476RG board, the following connection must be made: 
- Connect the Shield Grove to the card connectors. 
- Connect using the Grove cable, the LED to one of the available ports. We will choose port D2.

Be careful to respect the direction of connection of the Grove cable (4 wires in 1 with polarizing slot).

Let's get to the programming now! 

We are going to use the block: "[Neopixel] set all LED to colour  ... on pin D0", available in the Display of the blocks locker.



By clicking on the colored bubble, it is possible to select a predefined color in the grid. 

If you wish to individually modify each of the three LEDs (RGB) making up the module in order to obtain a specific color, you must use the following block: 



Use the following interface to program the module: 

Once the program has been created, it must be copied onto the card. To do this, you must use the "Upload" button (see Activity 0: Getting started with the board)

In this part, we suggest that you flash the LED to obtain a traffic light.
Here is the program to create so that it runs continuously: 


Blocks are already available on the work area. Now it's up to you:  
Launch the simulator to check that your program is running correctly or download it to the card. 


You succeeded ? Perfect, you now know how to program an LED using your NUCLEO-L476RG board! 
Discover the other activities of the Starter kit by clicking on the icons below.