This is a thread about using the CNC Shield v4 as the main board. If you plan to do this, buy this kit:
https://www.aliexpress.us/item/2251832035811475.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.10.3fe9i0iWi0iW2v&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40196.366991.0&scm_id=1007.40196.366991.0&scm-url=1007.40196.366991.0&pvid=5c83e78e-97fb-48de-a5c7-35db0da5b120&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40196.366991.0,pvid:5c83e78e-97fb-48de-a5c7-35db0da5b120,tpp_buckets:668%232846%238111%231996&pdp_ext_f=%7B%22order%22%3A%2210%22%2C%22eval%22%3A%221%22%2C%22sceneId%22%3A%2230050%22%7D&pdp_npi=4%40dis%21USD%2119.99%2119.99%21%21%2119.99%2119.99%21%402103010e17397411430922198e1202%2155305829959%21rec%21US%216242698492%21X&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A. This may be more expensive then the $2 "cloned" boards, but it is entirely worth it. The cloned boards have many problems that require cutting PCB and soldering to fix. To find out more about this, look up "Fix Cloned CNC Shield" and an instructable should show up. The expensive Keyestudio kits work right out of the box, and come with the required stepper drivers. If you need any help, just ask.
Here is the pinout diagram for the CNC Shield:

Here is the pinout for adding a buck converter powered servo:

I will probably not update this thread much (or whatever the posts will look like on the github) because I am busy developing my own budget MMU (for klipper printers only). That's it for now!
Liam
Hello Liam,
I am at a loss I tried another set of nema17 steppers they do the samething. I tried 6 diffrent 12 power supplys (2a to 5a) samething nothing has changed I even reinstalled arduino ide to 1.8.18 thinking it didn't like 2.3.5. After all this work I have done to get this far and nothing is working :(