To begin reading sensor data, you will need to download Adafruit_HT1632 and Adafruit_GFX from the Arduino library manager.
Open up the Arduino library manager:
Search for the Adafruit HT1632 library and install it
Search for the Adafruit GFX library and install it
If using an earlier version of the Arduino IDE (prior to 1.8.10), also locate and install Adafruit_BusIO (newer versions will install this dependency automatically).
We also have a great tutorial on Arduino library installation at:
Now you are ready to test! Open up the IDE and load File→Examples→Adafruit_HT1632→basicdemo and upload it to your Arduino.
This code will do a basic test of the underlying chip, and light up the LEDs on the panel. The LEDs will not light up in order because the memory of the driver doesn't match the layout of the LEDs (this is normal, we fix the problem later!)
Once you have done the low level test, open up File→Examples→Adafruit_HT1632→matrixdemo - this is a more useful demo, it will light up all the LEDs in order on the panel.