DM320T

The media could not be loaded. It was easy to wire a standalone test and confirm that the controller does what is promised. It allows microstepping and current limits for a smooth and precise drive.The setup is well displayed in a silk screened table on the case.It looks very professional for the buck.Strongly recommended

PARFAIT

Nach Anschluss und Verdrahten erfüllt der Treiber seinen Dienst!

I've been using two of their models for several months running a custom assembly machine. These things are durable and easy to use.I drive them with a Rapsberry Pi with the GPIOzero library.Code them as an LED and use the toggle() command to step them.Using the Raspberry Pi requires a level shift from 3.3 to 5V. The Texas Instruments CD74ACT541 line driver chip works flawlessly for this. Just power the chip with 5V. 3.3V signals from the Pi go in one side, 5V signals go out the other to the stepper driver.

1.The enable line must be connected or it will not run.2.This driver has that annoying clicking when starting and stopping the motor. Seen this with other drivers when the holding current on the driver (DM542 has a high/ow on SW4) was set on low. That made the clicking go away. This driver; no such luck. Tried ALL current settings. Still clicks. The "click" is actually a small shaft turning CW or CCW before executing a step sequence; not good. Tried all current settings too.3.Additionally, we cannot trust any products from the Far East without being inspected. This driver has NO HEAT SINK on the MOSFETS. This might be a problem on a hot day and cause overheating. In addition, the housing is ALL PLASTIC; which does NOT conduct heat! Bad omission by mfgr to save pennies!4.Driver works great on 8khz microstepping with 4mm pitch ballscrew (4/8000= 0.0005mm .) If it would only go to 10k to work better with 5mm pitch ballscrews; (5/8000=0.000625.) Not evenly divisible. Driver makers, you need to make smaller units like this with higher current ratings! A driver with 4A output this size housing would be great!