OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Programming a new Atmega328-PU › Re: Re: Programming a new Atmega328-PU
September 22, 2013 at 8:44 am #23805
That can come out of a variety of reasons. For example, the programming is not connected properly to the mcu, the mcu is not up running (due to clock source problem etc). You can Google the error message ‘initialization failed, rc=-1’ to see potential causes.