PeterVH

I intended to make a pull request for an implementation with bit banged SPI too. Since yours predates mine by one year, I think it is only fair to start...

I would like to pick things up again. I started again from rsbohn's last work and try to fix only things that make ArduinoISP more reliable or more portable to...

I think this issue can be closed, it is due to a bug in the usbasp firmware. See https://petervanhoyweghen.wordpress.com/2015/12/02/the-usbasp-and-atmega2560-mystery/ for an in depth (but lengthy) description. The bottom line is...

Hi all! @Testato: No, that mystery is solved too. I explained it here: https://petervanhoyweghen.wordpress.com/2015/07/21/arduinoisp-reliability-and-portability-improvements: scroll to the chapter "avrdude 6.1". The combo "ArduinoISP sketch + avrdude 6.1" correctly supports flash...

Hmm, that explanation is not that great. The "clever fixes in avrdude 6.1" consist of sending "universal" commands to the stk500v1 programmer (Arduino as ISP) to make it send the...