https://forum.arduino.cc/t/problems-downloading-ledcontrol-in-version-18/18387
Problems Downloading LedControl in Version 18 - Interfacing - Arduino Forum
Jun 25, 2010 - I just downloaded V-18 . . . now downloading LedControl has problems. When I try to complie the unzip . . . I get a "can not find file" error . . . where do I...
problemsdownloadingversioninterfacingarduino