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

[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.

[ravihotwok]

Well bit of an update. I sent rhe pcd back to planet nd they emailed me back the day they received it saying there was a faulty bit of soldering on rhe board which they have rectified and tested. It is now back with me and I have re fitted it. This all took 3 days fir play to them foe sorting it quickly. Anyway I have been stripping the old control box to now house the stuff for the spindle motor

[ravihotwok]

Here is the old box, I stripped it and sprayed it the same as the new control box as I want to mount the 2 together.


Now I mounted the power supply thing and bolted it now, I spaced it about 5mm up off the deck to help air flow, not sure if it is needed but though as there are vents on the underside it would make sense.

[ravihotwok]

Now I have to find a place to fit the small pcb which has the speed control dial plugged into it


Is it ok to mount this box directly ontop of my new box so it is nice and neat? I think the power will go from one box to another so it would be much neater if the cables were kept internal hence linking the boxes?

[ravihotwok]

Well another update,

I have rewired the limit switches correctly as I did it wrong the first time, I have also added ground wires to the shielding on the motor wires to connect to the star on the box I made. With the new diy motor power box I have made that is not fitted to the top of the planet box and I have begun wiring it into the planet cnc controller, just waiting on some confirmation off Planet CNC that I have wired it in correctly. I have soldered and heatshrunk the wires. Also installed a e-stop button but need to work out how the hell that gets wired in lol. One job at a time