Download Adafruit_HT1632 library

To begin reading sensor data, you will need to download Adafruit_HT1632 from our github repository. You can do that by visiting the github repo and manually downloading or, easier, just click this button to download the zip

Rename the uncompressed folder Adafruit_HT1632 and check that the Adafruit_HT1632 folder contains Adafruit_HT1632.cpp and Adafruit_HT1632.h

Place the Adafruit_HT1632 library folder your arduinosketchfolder/libraries/ folder.
You may need to create the libraries subfolder if its your first library. Restart the IDE.

We also have a great tutorial on Arduino library installation at:

Installing Adafruit GFX

You'll also have to install the Adafruit GFX graphics core library at this github repo. Rename it to Adafruit_GFX and install it the same way as the Adafruit_HT1632 library.

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.

This guide was first published on Jul 31, 2013. It was last updated on Jul 31, 2013. This page (Testing) was last updated on Oct 08, 2019.