Source
r/ender2•
nullvar2000

Updated to SKR Mini E3, now prints are double size

Hello all, first post.

I recently updated my Ender 2 to the SKR Mini E3 v1.2. So, I updated the firmware to adjust for the bed size, and prints were coming out nearly double the size they should be. I followed a calibration guide and got my prints to the right size, but now I've been reading that the you shouldn't change the steps/mm, it should be based on the mathematics of the motor/belt/pulley. This seems to be more than you'd adjust with esteps. Anybody have any ideas?

https://preview.redd.it/448mtveslv041.jpg?width=3264&format=pjpg&auto=webp&s=cf59610800803afa06e2e5621548aa7a020854d0

Posted Nov 25, 2019, 6:40 PM UTC

210
Brandonson112•

When I replaced mine I didn't have to mess with esteps at all. Maybe check your firmware settings again perhaps your microstep values are off.

1
nullvar2000OP•

What do you have for yours? I used the values from the ender 2 example config included in the Marlin repo which are 80, 80, 400, 93. Using M92 X40 Y40 X200 E46.5 got me in the ballpark of the correct size

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Brandonson112•

My values are 80,80,400,97.4.

In your configuration_adv.h file what are your microstepping values? I believe it should be set to 16.

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timmiej93•

Quick question: Are you using the original Ender2 LCD with the SKR Mini E3? If so, did you have to do anything special to get it working? I'm currently stuck on a lit, but blank screen.

1
Brandonson112•

Nope, and unfortunately I am not aware of anyone who has yet to get it working.

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timmiej93•

Damn, that's too bad. Thanks for replying though.

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timmiej93•

First of all, I apologize for semi-hijacking your question to ask you a question, but currently, you're exactly the person I'm looking for.

I just replaced my own Ender2 main board with the SKR Mini E3, but I can't get the LCD to work. Are you using the original Ender2 LCD with the SKR? If so, did you need to do anything special to get it working? I'm currently stuck on a lit, but blank screen.

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luisdamed•

I just managed to use the original Ender 2 LCD using this release https://github.com/Timmiej93/Marlin/releases/tag/v1

However, I also had to set my Esteps to M92 X40 Y40 X200 E208 (I'm using a Bondtech clone extruder) to get the axis movements right. Does anyone know if there's another way to solve that? Or what could be the reason for the double size we get when using the default E-step values?

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timmiej93•

As you may notice, my username matches the username on GitHub quite closely, so I'm familiar with that repo ;).

About the Esteps: I haven't had to change anything. If you used the firmware.bin file provided in that release of mine, it has to be a hardware issue (pulley size, stepper motor issue, board issue) on your end, since I've used the exact same build, and I've never had any scaling issues.

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