SparkFun LED Array (8x7) Hookup Guide
Contributors:
Shawn Hymel
Shawn Hymel 
Hardware Setup
The LED Array can be connected many ways so long as you have 8 pins available on your Arduino. For this example, we are going to use a RedBoard and pins 2-9. Solder 8 male header pins facing away from the LEDs:
Attach the LED Array to a breadboard and connect pins 2-9 on the RedBoard to pins A-H, respectively:
Note that you can also solder right-angle headers to the LED Array and RedStick or Pro Mini (again, pins A-H attached to pins 2-9) to achieve a seamless look:
