Why does the SPI library not work on an Attiny?...
Why does the SPI library not work on an Attiny?.. I found some code on gethub to get around this but... Can anyone point me to a good reference (guide, reference book, etc) for programming that might answer these strange truths that I am oblivious to. My background is Mechanical Engineering and Arduino. thanks!
this picture is from randofo
's helpful arduino ISP attiny programming instructable.