Activity No. 1: Measure the temperature and display the value in the serial console (IoT sensors kit)

The temperature sensor of the NUCLEO-IKS01A3 is a module that measures ambient air temperature over a range of -40°C to +125°C.

The operating principle is simple. This MEMS sensor (micro-electro-mechanical systems) consists of a thermistor, a small resistor, which allows current to flow more and more easily as the temperature increases. The information returned by the sensor is the temperature value in degrees Celsius.

To measure the temperature using the NUCLEO-L476RG card, the following connection must be made: 
- Connect the NUCLEO-IKS01A3 to the card connectors. 
- Connect the L476RG card to the computer using the mini-usb cable

Let's move on to programming now! 

We are going to use two blocks:
- "write in the console", available in the Communication of the block locker to manage the display.
- "[STTS751 thermometer] temperature", available in the Sensors, to retrieve the value of the module.


Use the following interface to program the module: 



The temperature will be displayed in the console, at the bottom of the interface.


To facilitate reading, a pause of 1 second can be inserted. 


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

We are now going to create a text, to make it easier for the user to read, in particular by adding the symbol °C 

You must use the block "create the text ... ... ... " available in the Text part of the block locker, by combining it with the block ("...") which allows you to 'to write. 




Here is an example of ready-to-use code:



This code includes:
- the display of a text consisting of the temperature value + the acronym ° C, in the console
- a 1 second pause for ease of reading

Download the program to the card and launch the console to view the temperature. 


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