Stepper Motor Current Question

[U.S. Water Rockets]

My Rostock Max V2 was purchased in April of 2014, so it just turned 2 years old.

For it's birthday, I treated it to a new set of Ball Cup Arms and switched to MatterControl, and the latest Repetier firmware from SeeMeCNC.

I was going through the user manual to follow the install and calibration process, since I changed the arms and wanted to learn the improved calibration method. When I was doing this, I noticed that there is a note in the manual that says to set the Stepper Motor Current parameters one way for Automation Technology steppers, and another way for Kysan steppers. Neither of the settings in the user guide matches the values I see in the configuration.h file.

I looked at my assembly manual and it looks like my steppers are NOT from Kysan, but it makes no mention of where they came from. So, I have no clue if they are Automation Tech motors or not.

Can anyone tell me what the correct settings should be for my 2 year old Rostock Max V2 with NON Kysan steppers?

I left the values at the default and went ahead and did a test print, and the printer definitely sounds different than it did before. It's a lot quieter then it was prior to the update.

I'm not sure if the default values are correct.

[Eaglezsoar]

The default values should be fine and should only be adjusted if you have a reason to do so.
The default values work with the majority of the Max V2 printers.
Enjoy your new arms and a quieter printer.

[Mac The Knife]

I recall that when they switched motors, they had to turn the current control down for the Kysan motors. I bought my printer in May of 2014, I'll see if I can dig up the current settings for you.

[Mac The Knife]

around line 701, in the config.h file, it reads: #define MOTOR_CURRENT {175,175,175,200,0} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)

[DGBK]

Your assembly manual wouldn't say where the motors came from. You'd have to look at the motors. There is a sticker on the back that should let you know. I had overheating issues on my extruder motor until I read this thread:

http://forum.seemecnc.com/viewtopic.php ... 132#p90132

[U.S. Water Rockets]

around line 701, in the config.h file, it reads: #define MOTOR_CURRENT {175,175,175,200,0} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)

Thanks. That looks like what I saw in the header file on mine as well. The thing that confuses me is that those numbers don't say which stepper motor brand they go with.

[U.S. Water Rockets]

Your assembly manual wouldn't say where the motors came from. You'd have to look at the motors. There is a sticker on the back that should let you know. I had overheating issues on my extruder motor until I read this thread:

http://forum.seemecnc.com/viewtopic.php ... 132#p90132

I can just see a sticker on the side of my extruder motor. It was hidden under the mount. Now I see they are Wantai, or something.

I'll check the thread and hopefully find the current there.

Thanks!


Edit: FOUND IT! Thanks!

[Eaglezsoar]

Your assembly manual wouldn't say where the motors came from. You'd have to look at the motors. There is a sticker on the back that should let you know. I had overheating issues on my extruder motor until I read this thread:

http://forum.seemecnc.com/viewtopic.php ... 132#p90132

I can just see a sticker on the side of my extruder motor. It was hidden under the mount. Now I see they are Wantai, or something.

I'll check the thread and hopefully find the current there.

Thanks!


Edit: FOUND IT! Thanks!

Are the default values close enough?

[U.S. Water Rockets]

My steppers say "Wantai" on them, and there was a snippet of code on the linked forum that says use 175 for xyz and 200 for the extruder for these motors. That what I needed.

Note: I would not have needed this but in the 2 years since I built my Rostock Max, I got a new laptop and the source code from my original install was not transferred, so I was starting over with fresh code.

Thanks to all for the assist!

[Eaglezsoar]

I am glad that you got it working the way you wanted, thanks for posting all of this, there is valuable threads that teach everyone.

[graham.p.heath]

I ran into this just now because of upgrading (also on a new machine) my old Rostock to the new hotend.

I've opened and issue on the new firmware repo if anyone's interested in chiming in.

https://github.com/seemecnc/Firmware/issues/4

Thanks for the help in finding the solution!