EASON Stepper Motor Driver TB6600 4A DC9-42V 32 Subdivision for Nema 17, 23 Series Stepper Motor CNC Controller single Axis Hybrid MicroStepping

Worked way better than the transistor setup I was using to drive a stepper before. Just so you know, there's ZERO documentation in the box- you just get the device and not a single scrap of paper comes with it. Use the documentation on this page AND note that for the dip switches the ON direction is down.Only thing they were really missing was how long you need to make the pulse on the pulse pins, or how much time you need on the enable or direction pins before the changes take effect. I used 30 microseconds on the pulse pins and it doesn't seem to miss any steps. Maybe less is fine, but that worked for me and I didn't need it to be faster so I left it at that.

The stepper motor controller worked during testing. As soon as I put a load on the motor, it burned out after a few cycles. I replaced it with a controller that had overvoltage protection and overvoltage was rated 50% higher.

According to datasheet, TB6600 goes up to 16 microsteps.This device goes up to 32 microsteps.Most likely using a cheaper chip still from Toshiba, which has 1A less current.I don't need 5A peak current, so it's ok. Your mileage may vary.

For most small stepper motor applications (like 3d printing), this driver would be overkill. The little “step-stick” style pc-mount drivers are fine in those applications. But every so often, you need 3+ amps of drive current for thinks like cnc cutters or machine retrofits. This unit is great for those requirements.The “32 subdivision” reference is to microstepping - a technique that divides a step cycle into more parts. In practice, this should not be thought of as a way to increase resolution, but rather to increase smoothness and reduce resonance problems. Other drivers offer as much as 256 levels of microstepping, but the practical value of that specification is debatable.This driver does the job when you need to step up to just a bit more power. Recommended

I ordered three of these to rebuild one of my CNC controllers and after ruining several pieces of brass attempting to engrave a plaque troubleshooting indicated one of them was dropping/ignoring pulses. On a multi pass job each pass would start in a different spot on the Y axis! Amazon replaced it quickly, though, and now all is fine. I hope the returned driver module doesn't wind up in "Amazon Warehouse" to cause somebody else grief! I can't believe they wanted a $14 defective part back...