My Cheapo Chineese 3020t mini CNC Build (more like improvements) leanring all the way

[Clive S]

not too sure what a star point is, how do I connect it to the metal braid screening?

This has been talked about many times on here try a search !! Read some of the build logs etc you don't seem to take advise when offered

[ravihotwok]

Advise welcome, instructions even better. Searching is great, but is something can be answered in a simple sentence then that saves a lot of time. Will do a search now and see what I can find.

That wiki link explains a lot. Except the best way to go about physically achieving it.

[ravihotwok]

I now understand what a star point is. Can I splice into each of the motor cables just to expose the outer metal braid, then solder/heatshrink a cable to it which can then me linked to a star point in the box?

[Gary]

the screen is just metal that picks up the noise and passes this noise back to ground as current, so as long as you have a good connection to ground that is all you need. so use your initiative and solder a wire onto the screen and connect it to gnd.
how you do it is up to you and depends on how messy you can accept.

[ravihotwok]

Great Gary, I understand that. Im pretty sure I can do that nice and neat and finish off with a bit of heatshrink to keep it all covered up.

[Lee Roberts]

Ravi, like this:

Just solder Separate wire to shield, fold back and put shrink wrap over then run wire back to Ground point.

Attachment 14744 Attachment 14745

Basically you are building a path for any electrical noise that may target your cable and give problems, so it can leave the system.

[ravihotwok]

Awesome lee, instead of doing it like that I will do it a bit further back as ive got plugs on the end of my cable which connect into the planet control box. But I will put a earth point where the plugs go into the box, so there will only be a short length from the motor cable to the box for earth, should look reasonably neat. Thanks chaps for explaining in laymans terms, helped a lot. Will crack on later tonight and report back with some more pics