The biggest limitation of all the chip based design is that they cannot handle much voltage. With only a 30-45 volts, power supply, it's hard to get the full power out of your motors.
If you use 35v for all, you won't notice much difference between the g212 & PicStep. But if you use the 212 with the max allowable voltage, there will be no comparison.
The picstep (and other lmd18245 boards) is the best of the chip based boards since you can use it with 40-45v. If you're not happy with it's performance, you won't like the allegro 3977. It can only take about 32 volts. |