On Mon, 17 Dec 2018 at 14:18, Charles Steinkuehler <char...@steinkuehler.net> wrote:
> That sounds like a floating signal. And you were right. It appears to work now. I hadn't read the docs properly and thought that SPI.beginTransaction was the new SPI.begin(). Not so! So my SPI pins were not in the correct pin modes. (bit clearly were still somewhat working, sometimes) https://www.arduino.cc/en/Reference/SPIBegin -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users