Dave
The avr driver is working as well as I can expect, but I'm finding that I would like to get more power out of my motors. A bipolar drive will give 40% more power, but is more complex to design. Since my motors only need about 1.4 amps, the A3977 looks like the best solution for my current setup. I'm planning to put the avr on the vertical axis for comparison. This axis will only be used for pcb milling and drilling, so it isn't as demanding.
Henry |