Sainsmart Genmitsu 3018 CNC upgrades

I frequently upgrade 3D printers so why not improve a small CNC router?

Through these upgrades you will:

• Switch to a higher power and RPM Dremel 3000. It improves the performance of the router and still still be removed to use by hand.
• Implement closed loop S42B stepper motors. These can supply more torque than the standard steppers, are much quieter and will improve accuracy.
• Switch to an open source 32 bit mainboard running Marlin including an LCD display/controller. No laptop needed anymore.
• Delete the separate power brick. Less clutter.
• Have the Dremel controlled directly by the firmware via relay.

Video guide: https://youtu.be/Q4TrzshXV10

Designed to be used in conjunction with this LCD case (minus base): https://www.thingiverse.com/thing:2813298
and this Dremel 3000 mount: https://www.thingiverse.com/thing:3938914

Shopping list:
Sainsmart 3018 CNC: https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625
BTT S42B closed loop steppers: https://s.click.aliexpress.com/e/_dVyzQEN
BTT SKR mini V1.1 mainboard: https://s.click.aliexpress.com/e/_ABpcY7
Reprap Fullgraphic smart controller: https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625
Dremel 3000: https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625
Active low twin relay as used: https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625
24V 5A PSU (I sourced mine locally but this looks identical): https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625
Mains input switch: https://www.amazon.com/gp/product/B07P6K9BL3/ref=as_li_tl?ie=UTF8&tag=teachingtech-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P6K9BL3&linkId=eefeba0ab371b02b5ecac4e8f721e625

My Marlin firmware for this setup: https://github.com/teachingtechYT/Marlin/tree/3018-cnc-skr-mini
Wiring diagrams: https://imgur.com/a/ICJgvhc