Q's:
1. Since most of the communication to the stepper drivers is done via SPI, is there any clock syncronisation used to ensure all the steppers step at the same time, or are you simply relying on the SPI commands to be followed as soon as they're received?
2. Is there any reason that you didn't go 3.3V (using say an Arduino Due) rather than sticking with 5V (and the Arduino Mega)?
3. Given most 200mm PCB heated beds tend to run right on the 10A mark, and people are looking at larger beds on some machines, is there a reason that you've set the max current to 10A instead of 15A (giving a bit more headroom)?
1. Since most of the communication to the stepper drivers is done via SPI, is there any clock syncronisation used to ensure all the steppers step at the same time, or are you simply relying on the SPI commands to be followed as soon as they're received?
2. Is there any reason that you didn't go 3.3V (using say an Arduino Due) rather than sticking with 5V (and the Arduino Mega)?
3. Given most 200mm PCB heated beds tend to run right on the 10A mark, and people are looking at larger beds on some machines, is there a reason that you've set the max current to 10A instead of 15A (giving a bit more headroom)?