Does anyone know of any books, online courses/tutorials or anything that teaches you how to write can bus sketches for arduino ide for the macchina m2 and/or blynk app?
Here’s one book that is helpful: http://opengarages.org/handbook/
But, it covers a wide range of topics and boards so it isn’t geared specifically toward either Arduino or the M2 and doesn’t really get down to the nitty gritty details of how to program sketches. But, the book helps to explain the general topic and so is informative.
For learning CAN with the M2 your best bet is to load up all the example sketches and play with them. The due_can library has several examples. Here’s an OBD-II scanner sketch that could be helpful: OBDII Scanner Sketch
Then, ask questions. Everyone starts from the beginning, we’ve all been there confused and asking questions of other people. There are lots of knowledgeable people on this forum so hit us up with any questions as you go. But, do try it for yourself too. The best way to get familiar with it all is to try things out and run every sketch you can get your hands on.
Also note that the book is Creative Commons which means you can download it now for free.