the problem is in the first three lines...

//‪#‎if‬ defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)

//‪#‎define‬ INTERNALINTERNAL1V1 // INTERNAL schould be defined already in the arduino.h or cc

//‪#‎endif‬

then it workes... -arduino is wiring and not C# ;)

if im correct you can do this in an library but not in the sketch

Hi Ferdinand.

Thank you for your response.

I'm beginner , and I don't know how to modify a library.

Can you modify this attach file to make me know what you mean? Thank you very much

Hi Paulin --

It appears that the Arduino compiler/driver has problems with C preprocessor directives (at least my version -- 1.0.5)

I was able to compile this example by moving the # directive section to a new file and including it in the top level sketch file.  Just do the following:

1. Create a new file (e.g. 'sketch_jan03a')

2. Cut the first three lines from 'sketch_jan02a(.ino)' and paste them in the new file:

‪#‎if‬ defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)

‪#‎define‬ INTERNAL INTERNAL1V1

‪#‎endif‬

3. Save the new file to the same folder as 'sketch_jan02a.ino'

4. At the location that you cut the three lines, insert '#include '

I'm not sure why exactly this hack works, but has to do with the way Arduino uses regular expressions to (pre)process source code files.

Hi

Im not sure if u really need this three first lines - try it without first ;)