well, since it is not 65535, 65535,65535 but -1,-1,-1 - this proves it is not 'int' format, this is something else. Might be bad contact somewhere, f.e. Try regular Arduino with the same sketch?
well, since it is not 65535, 65535,65535 but -1,-1,-1 - this proves it is not 'int' format, this is something else. Might be bad contact somewhere, f.e. Try regular Arduino with the same sketch?