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Thanks a million John. This will help greatly and might prevent my frying my new chips.
Bruce

fwiw I think I discovered the biggest hitch I was having. It seems that I was using an Arduino clone with a ch340 chip instead of the 16u2. I changed to another arduino (still a clone but it has...

I will definitely look into these dm542t. Maybe it will save me from throwing away time and money. Thanks

Thanks a lot for the help. That's good information. I am going to drop the steps and the feed rate. I will probably have to go with a TB6560 if I want higher amperage, but I wanted to avoid that...

Cant find a datasheet. Its a LongsMotor 23HS8630 and I think it rated for somewhere between 2 and 3 amps. But at 1.5 amps the drivers are hotter than a two dollar pistol.

Forgot to put that in. Its a 5/16 - 18

I am wondering if I have set my microsteps too high on my diy cnc mach. At first I was happy to find that I could get all 3 nema 23 motors to turn. I have an arduino/cncshield with drv8825 (all are...

I've just been wondering if I might have an easier time with cnc'ing if I quit trying to do a little bit in Imperial and a little in metric. Maybe If I just concentrated on metric it would keep the...

Thanks a million George! You made it look easy.

I really need some help. I might have been able to figure this if I didn't have to go back and forth between metric and imperial measures.
I am trying to figure:
steps per mm = steps per rev *...

I am a total newbie on the subject of stepper motors and drives and I have been reading as much as I can to learn. However I am not getting very far. Here is my problem: I have built a table and...