diy 3d printer design verification

[AutoWiz]

I have two main questions. (1) What controller should I use? I’ve looked at the skr pro and the duet, but need something capable of controlling 9 steppers. (2) Being new to 3d printer design, does my design look correct? Are there any problems you see, or things I could improve whilst still in the design phase? any knowledge you've gathered from your own attempt?

SKR 1.3 is a great board. 32 bit controller that will run marlin 2.0. And it is cheap, too: https://www.ebay.com/itm/SKR-Mini-V1...AAAOSwcrVdea2l I am installing one in a printer I am setting up with a whole mess of steppers. I am using stepper driver expansion boards and this tutorial: https://www.youtube.com/watch?v=vIChqkEAuto&t= and we can use as many steppers as we like with whatever board we like. I personally like the 1.3 board and also I have found the absolute latest version of the tft touchscreen. from Bigtreetech the tft35 v3.0. I found this bad boy on amazon. It is both a color touch screen AND a lcd12864. or it has the knob anyways: https://www.amazon.com/BIGTREETECH-D.../dp/B07W1PB11F You should also look for the TMC2208 v2.0 stepper drivers and run your build with a 24v power supply. You will be so much happier with 24v over a 12v system. Especially if you have a large heatbed or want to print with higher temp materials.