Hi there, I'm new with the Arduino. I want to display via this TH1640, but when I compile the example, the compiler says:
C:\Program Files\arduino-0018\libraries\TM1638\/TM16XX.h:58: error: 'String' has not been declared
What do I do wrong? Same happens with other Versions of the same lib.
Can please somebody help me? I haven't programmed for a longer time so I'm not sure what happens here.