Skr pro v1.2 + tft e0, e1 steper doesnt work

Mladen · March 1, 2026, 11:31pm

So I almost finished the build on my MPCNC (all supplies purchased from V1E in Austria), and didn’t do any update. Did testing with all motors connected on table and found out that motors connected to E0 and E1 port doesn’t work. Besides that, Marlin mode doesn’t work, only touch screen. Do I have to update firmware on BIGTREETECH SKR-PRO-V1.2 and BIGTREETECH TFT 35-E3 V3.0 ?

As far I researched, if I load it have to be: V1CNC_SkrPro_Dual_2209-** Ready for dual end stops, regardless there is no endstops switches, is it OK?

Thanks.

Bartman · March 1, 2026, 11:46pm

Not sure why some motors aren’t working, but I did notice that you need to install the heat sinks on your driver’s.

MakerJim · March 2, 2026, 12:09am

Usually when marlin mode isn’t working it’s due to the grey cables being incorrectly installed.

Mladen · March 2, 2026, 9:08pm

I checked the gray cables and they look correct. I think it will be best to reflash both cards tomorow. Thanks for reply.

Mladen · March 2, 2026, 9:09pm

Heat sinks will be installed, I just put all together + wired to check, will everything work.

Thanks for the reply.

Mladen · March 4, 2026, 9:51am

I solved the problem, I had to reflash both cards, now all the steppers work.

Mladen · March 14, 2026, 7:29pm

I succeed, It made crown.

But on strange way: I put SD micro card with crown-gcod into slot on SKR PRO and on TFT35 in Marlin mode selected print.

Other option is to have SD micro card with FIRMWARE in SKR PRO and SD card in big slot in TFT35, in touch screen push print icon. If I have same configuration, in Marlin mode there is on screen: No Media.

Is there any explanation?