(see the micro-stepping PDF document for details) I used a MOON’S SR4 bipolar 24-48 V. This is a motor controller supporting a configurable range of micro steps. The software, including the STL files ...

Meanwhile, the Arduino Mega is getting the same USB chip along with an ATMega2560 processor with twice the memory. Right now only 128K is available, but that's a software limitation and they're ...