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Just an update:
My drivers from Lucas arrived , did well after assembly from the vey first moment. No noise at all. I monted the drivers on heavy PC-CPU heat sinks(cheap surplus) for dead effective...

Thanks lucas. Now I am prepared to continue wiring.
Just for double checking: Arduino(grbl) ports need to be high in idle state? Factory init is low (measured with scope).

BTW: I just bought at...

HI Lucas,
thanks for your hint. After I studied the datasheet I am convinced. And yes they have resolved at THB6064 the mandatory sequence of power switch ON / OFF as well. That is good news.
I...

Yes ID! You are right!
But we need to account for tolerances of resistors to be 5%.
We need to guarntee in worst case that we can adjust 4.5V minimum. Of course there is the other extreme where we...

Suggestions for mods: Rattm TB6600:
262250
Please note that:

These mods are just now suggestions only, not tested and will be the basis for my modifications.
As most boards are generated by...

Confused:
1. No mods
2. Stable 5V PSU from ATX

Please regard that the original Chineese design does not care for power sequence. I would not dare to operate this board with more than 12V without...

Hi frie,
I can not recall the conditions when my 4 channel board died. I used 30V. I was red-necked at that time and instable connections might have occured.
Those multichannel boards from China do...

Here the brand new circuit diagram from my TB6600 Rattm stepper driver:
262208
It is mostly identical with Haoyu schematic posted some time ago.

My findings for Rattm:
:-)

Switches M1 ......

Merry Xmas to ALL!
Still digging into TB6600. I've done some calculations (including tolerances of components) and tear down of the Rattm board. :-( While the Rattm board is only the poor example in...

Hi ALL!
Since long time I digested all knowledge I could find along TB6600 driver. I own a good German ISEL mill (mechanic only) (workig area ca. 20"x20") with NEMA23 motors. After I burnt a 4...

Is is not so complicated as it seems at first glance. As I mentioned before there are different approaches possible but they shall be obeyed consequently.
1. At GND system we need to be aware on...

Hi all,
following your discussion about cables and shielding I feel that shielding allone is only one side of the coin. Along a bad design any shielding may get the problems worse. I confess to be a...

New TB6600 driver board found along full documentation:
http://reprap.org/wiki/PiBot_TB6600_Stepper_Driver
http://reprap.org/mediawiki/images/0/0d/PiBot_TB6600_Stepper_Driver_sch.pdf...

Hi ALL!
I'm a newby in CNC matters but with electronic experience. Is there any experience available with stepper driver mentioned above? I am willing to correct some items like mounting or changing...