The PoStep 25 is a lowcost stepper drive developed by Polabs. It is plug and play with USBCNC, and intended for the lowcost market. It does not have the same level of protection as our other drives (5042,5056,8078), those have over/under voltage and short circuit protection. This drive will be broken when the above happens. But the price is so low, that replacing it is not an issue...
The 4015 is a very small size high performance microstepping drive based on one of the most advanced technologies in the world today. It's suitable for driving any 2-phase and 4-phase hybrid stepping motors. By using advanced bipolar constant-current chopping technique, it can output more speed and power from the same motor, compared with traditional drives such as L/R drives...