Problem with AM882 drivers !..... or it could just be me !

[Shinobiwan]

Maybe one day il get to like these drives but the Gecko was tough to beat , it work faultlessly for over 2 years , was easy to setup and always cut parts smoothly and keeps tempting me as i havent sold it yet!.
There was a good resson for buying the Gecko G540 as it was just plug and play compared to plug and .....
Well theres something im just not getting " surprise .. surprise" . When i said analog i mean DIP mode and i understand that the drive will be setup in one mode only ie: using DIP switches ( which the mill ran fine apart from the squeeling ) or Digital ie: software and nothing runs correctly !.
So i turnned the light on and its very dim!.
The drives are set at 8x micro steps on direct drive 5 pitch metric screws , and with the steps set to 200 in Mach3 i get the measurment above.


So is this the calculation i need for the steps steps/unit = (steps per revolution) x (microsteps per step) / (displacement per revolution)

I just played with Mach3 and set Mach3 to 270 steps at which point i got the machine to move the correct distance , just got to work out why its this number .
Im the weak link for sure but theres still room for improved manuals on Chinese products.
Back to my corner !.

P.S Il never sell these drives because they have gave me sooo much grief , instead im more likely to post a snuff vid of me cutting them up with an angle grinder just for the hell of it ....... wheres that grinder....

Why are you using 270? 5mm pitch with those setting should be 320.

If your using a standard 1.8 deg stepper then the calculation is

Step per = (360 deg / step angle) x microstepping) / screw pitch)

or

320 = ((360/1.8) x 8) / 5)

Since the AM882 only deals with integers then a x7 micro stepping would give 280 steps per.

Have you messed with the DIP switches from the factory settings? Put them all to the default. I never touched mine and set it all up in software.

As for the whistling, this is something you'll have to live with. Its harmless and is a byproduct of the drive constantly monitoring and refining the current running through the motor. You can lessen it using the motor tuning software included.