Hello Joerg,
??? Like Gary I intended to use a Nano as the controller, Partly because I have several of them, and the Due is so much more expensive. It was also because I assumed that Erik's emphasis on the use of a 3.3 volt board was simply a case of the data level change, which is easy to achieve after all.
??? I hadn't realised that there was so much more to it! So thank you for the very helpful reply that you posted.
?? After "assignments in the code" there are three little boxes. What are they for? I couldn't make them do anything. ??
Tony (G3PTD)
