Hmm, there's a challenge :)
The cost per CPU pin goes down as the package size increases, but the soldering becomes increasing difficult. Splitting the task between multiple CPUs needs a high-speed low latency comms bus. More steppers means more CPU power as well.
I think I can daisy-chain expansion boards, I will have to think about the best way to do that.
The cost per CPU pin goes down as the package size increases, but the soldering becomes increasing difficult. Splitting the task between multiple CPUs needs a high-speed low latency comms bus. More steppers means more CPU power as well.
I think I can daisy-chain expansion boards, I will have to think about the best way to do that.