A small countdown program for a custom shield comprising:
- Adafruit 8x8 bicolor led matrix (http://www.adafruit.com/products/902)
- A piezo buzzer
- 2 push buttons
- Download the Arduino environment for your platform from http://arduino.cc/en/Main/Software
- Download the AdaFruit LED Backpack library from github as a ZIP file. Uncompress it and rename the folder
Adafruit_LEDBackpack. Check that the folder contains
Adafruit_LEDBackpack.h. Move the library folder to your arduinosketchfolder/libraries/ folder (you may need to create the libraries subfolder if its your first library. Alternatively, you can import the library using the item Import Library... from the Sketch menu.
- Download the AdaFruit GFX library, rename to
Adafruit_GFXand proceed as above for installation.