Install the Arduino IDE

The first step is to install the "Arduino IDE", a program that runs on your computer, which is used to develop code and download firmware to the Arduino board. To do so, please follow the instructions on the Arduino webpage here.

Once you have the Arduino IDE installed, it's time to set it up for your board.

Arduino Software Setup

Before we can install the Sensirion software, we have to prepare the Arduino IDE for the Arduino board. To do so, first connect the Arduino to your computer using an USB cable. Then, start the Arduino IDE. Afterwards, select the "Tools" menu, and select "Arduino/Genuino Uno" from the "Boards" submenu:

This defines for which board the code is compiled.

Next, we have to tell Arduino IDE to which port the Arduino is connected. This can also be done in the "Tools" menu, where you have to select the corresponding port from the "Port" submenu. Note that this can look differently than the screen shot, depending on the operating system you're using and the USB port it is plugged in:

The next step is to get the software library that supports Sensirion's humidity and temperature sensors. To install the current version, download the archive using this link and import the .ZIP archive by running "Sketch > Include Library > Add .ZIP Library".

The Sensirion library comes with two examples, one for the I²C sensors, and one for the analog SHT3x chips. Since we're using the SHTC1 board in this example, we'll use the I²C example, which is called 'sht-autodetect'. To open the example program, select "File > Examples > arduino-sht-1.0.0 > sht-autodetect".

To compile the firmware, we use the "Verify" button shown below:

Afterwards, we can use the "Upload" button to upload the code to Arduino:

In order to see the values read from the sensor board, open the "Serial Monitor" from the "Tools" menu. This will show a new window, which displays values for "RH" (relative humidity) and "T" (temperature). Try holding the sensor board over a cup of coffee to see if the values raise.