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

[ravihotwok]

here is a pic of the soldering I did, the limit switch plugs are on the bottom.

I cant see anything obviously wrong from the picture, to check the back of it would mean removing all the soldering to allow it to separate. Am I correct in understanding that I could program the end socket to act as the y axis input if it works?

Just an idea

[Zeeflyboy]

Really the easiest way to check for shorts or a break in continuity between points is using a multimeter... anything else is just guessing. If you don't have one, they are fairly cheap and extremely useful when doing anything remotely involving electronics.

Yes it is probably possible in your software to assign whatever switch input to whatever axis, but I have no experience with the planet-cnc stuff I'm afraid.

[Neale]

The other thing to watch out for when soldering boards like this is the tiny whisker of solder that bridges two connections. Can be difficult to see. Can't tell from the photo, but a scratch between adjacent soldereed pads with a small sharp implement may detect something, if there is anything there.

[ravihotwok]

right then massive update, followed your advice and the motorrs are running sweet. Back to the y axis limit switch I have also followed your advice and found there is a problem with the board, the pins are connected fine, but there is a break in the signal somewhere. Not sure where though. Think im going to gave to remove all the solders and remove it from the metal plate to have a nose ffs

[ravihotwok]

many thanks neale, after all the grief I got about my soldering skills (or lack of) that was my first port of call but they all look fine. I think I have found the problem. I have tested all the pins against each other and found an inconsistency with limit plug no2. All the other tests on the other plugs behave the same but when I do the same test on the no 2 plug nothing happens. There doesnt seem to be a visible circuitry on the pcb so i am guessing this is enclosed within the pcb somehow? uploading a vid now

[ravihotwok]

here you go chaps, excuse the crappy diagram but just wanted to show the test

https://youtu.be/ZIXuiPqgiY0

[ravihotwok]

will be sending this info back to planet and hopefully get a new one sent out. This will give me a chance to finalise my wiring and get the earthing sorted. Just really motivated now thanks to you guys, getting the motors to work properly has really cheered me up.

[Zeeflyboy]

possible when you were removing the solder you pulled up or otherwise damaged the copper trace around the hole... If so you should be able to see the trace in question, just scratch off the surface next to your solder blob and run solder to the trace. Alternatively you could run a small jumper wire or use a pcb repair pen.