4 digit I2C

C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4DisplayDec(uint8_t, short unsigned int, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:60: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4DisplayHex(uint8_t, short unsigned int, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:93: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4SetLumin(uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:99: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4SetAddress(uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:105: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4DisplayBuff(uint8_t, uint8_t*)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:112: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::Seg8b4ReadVersion(uint8_t, uint8_t*, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:43: error: too few arguments to function 'uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:117: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1Display8x16Str(uint8_t, uint8_t, uint8_t, const char*)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:135: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1FillArea(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:141: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1ScrollingHorizontal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:146: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:150: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1ScrollingVertical(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:156: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1ScrollingVerticalHorizontal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:161: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1DeactivateScroll(uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:166: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1Reset(uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:171: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'int ZtLib::ScI2cM1SetLocation(uint8_t, uint8_t, uint8_t)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:176: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'void ZtLib::ScI2cM1DisplayDot16x16(uint8_t, uint8_t, uint8_t, const char*)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:187: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:193: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h: In member function 'void ZtLib::ScI2cM1DisplayArea(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, const char*)': C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:221: error: at this point in file C:\arduino\arduino-1.0.1\libraries\ZtLib\/..\Wire\utility/twi.h:44: error: too few arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t)' C:\arduino\arduino-1.0.1\libraries\ZtLib\ZtLib.cpp:231: error: at this point in file

http://www.ebay.com.au/itm/I2C-interface-4-Digit-8-Segment-LED-Display-Digitron-Module-compatible-Arduino-/180945892876?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D6721270036355912245%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D180945892876%26

basically, I bought that above.

I thought maybe it was faulty so i used Nick Gammon's I2C' scanner

0x27 i2C address found

So then, if this library supposedly works with 1.0 what's with all the fuss for 1.0.1?

Post your code, and your .h and .cpp files.

The Ztlib CODE is via to the TWI base CODE, the Ztlib which you use currently is base on arduino version 1.0.0, The TWI base code is different between arduinoV1.0.0 andV1.0.1, The new version i have post to you