Need help trying to recover my 3018 CNC, Help!..

Other Hardware Motors, Mechanics, Power and CNC
1

Hi guys, new to the forum and seeking some help trying to recover my 3018 CNC.

Sorry if this is not the correct place for this post, new here.. :confused:

Basicaly i burnt my original board trying to wire the Limit Switches and i think i fried the original Mega328P of the board as now it basicaly just overheats when i turn it on..

Sometimes gives random commands to spindle and all XYZ axis.. :frowning:

So i ordered a CNC shield V4 - HW-702 Board, thinking it would be easy to just get it up and running, but havent even turned it on after everything i read online..

I have 3x A4988 i think working drivers.

1x Arduino Uno i think maybe a clone which gives me a error, something about something not syncing up..

And the V4 board.

Can someone give me some help trying to get this to work, or should i just quit going down this path and just sell all of these and order a new board that already has everything configured?.. https://pt.aliexpress.com/item/4000873108531.html?spm=a2g0o.cart.0.0.64e83c00VpdtbM&mp=1
for example, v3.

I understand basic eletronics and im good with soldering, but this bridge is a long one by the looks of it...

I was just trying to get homing cycle on and the limit switches to protect the machine and just f** up big time.. :frowning:

Can anyone help? I added pictures so you can all see the components i have.

Best Regards,

Luke

IMG_20200906_051347.jpg
IMG_20200906_051347.jpg3456×4608 1.61 MB

2

IMG_20200906_051347.jpg

By the look of it, that board has all the necessary connections for your CNC laid out so unless the alternative has the same connections, a matching replacement may be the best approach.

Using a "shield" is one of the few valid reasons for using an actual UNO/ Duemilanove. Clones, many or most of which are not actually UNOs but variants of the older Duemilanove will in general be perfectly functional because they all have the same ATmega328 chip but you must have the correct driver for the particular USB chip loaded and you must also select the version of "UNO" corresponding to the bootloader that is on the Arduino. That should not be a particular problem but you may need to try some different options to load a simpler test program such as "blink".

3

Hi paul, Thanks for your support!

I forgot to add the picture of the V4 Board. I just tried swapping to voltage regulators from the Arduino UNO to the supposed burnt board, and still no sucesso.. LEDS are in fixed state.. :frowning:

I think the rest of the board is good but i have fried the actual 328p chip.. Would a chip swap fix the original cnc board itself?

Sorry i might be a bit confusing...

IMG_20200906_050857.jpg
IMG_20200906_050857.jpg2672×4288 729 KB

4

IMG_20200906_050857.jpg
Ah! Uses a Nano. I like it! :sunglasses: But I am suspicious about the regulator.

If you have the capability to both program the new chip (I don't know whether that board facilitates on-board programming) and replace it (presumably if you can swap 5-pin voltage regulators, you are so equipped ), and if it is actually the (only) damaged part, of course that would be appropriate.

As you are asking all these things, I am unable to assess your diagnostic skills in this regard and it will be somewhat painful to step through the process on the forum here! :grinning:

5

Posting has been moved to a board I do not monitor. Cheerio! :grinning:

6

Some of those NANO based boards have a wrong layout and require a different version of GRBL