Activity No. 8: Switching on and off the LED matrix using a distance sensor (IoT sensors kit)

To light this RGB LED matrix according to the distance returned by the Time Of Flight distance sensor, the following connection must be made: 
- Connect the NUCLEO-Shield to the connectors on the card. 
- Connect, using the Grove cable, the LED matrix to one of the ports named I2C available as well as the Time Of Flight module to the other I2C port.
- Connect the L476RG board to the computer using the mini-USB cable.

Let's get to the programming now! 

Here is the program we are going to carry out: 
- If the distance (in cm) is less than 50 then
- Display the Vittascience logo! on the matrix
- Else
-

We will use the following blocks:
- "If...then...else", available in the Logic of the block locker,
- ".. < 50", available in the Logic
- "[Time Of Flight] Distance in cm", available in the Sensors,
- "[RGB LED matrix] display..." available in the Display of the blocks locker .


Use the following interface to program the module. The blocks are already available on the work area. Now it's up to you: 
 



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)



Did you succeed? Perfect, you now know how to program the LED matrix and the distance sensor using your NUCLEO-L476RG board!
Discover the other activities of the IoT Sensors kit by clicking on the icons below.