Makerbase MKS Sbase

jeffeb3 · July 10, 2020, 5:57pm

First, check the baud rate on the screen. It should be 250k.

After that, the serial port probably isn’t enabled in the firmware. Does the port you’re connecting it to have a number, like tx1? If so, set SERIAL_PORT_2 to that number (1, in my example).

remon_v · July 10, 2020, 6:16pm

I can’t find the baud rate in the settings.

The port is called aux1 on both the board and the screen.

jeffeb3 · July 10, 2020, 6:20pm

On the tfts I played with, there was a button in the settings to change the baud rate and it started at 115.2k.

Can you post a pic of the port you’re plugged into on the mks? I will have a minute at a keyboard in a little while and I can look at the schematic to guess which port it is on.

You could also just try 1 and set the baud to 250k and try it.

remon_v · July 10, 2020, 6:28pm

Maybe the baud rate need to be changed in the firmware?

Here’s the TFT with the schematic:

Here’s the board with the schematic:

Where can I set the port?

jeffeb3 · July 10, 2020, 6:35pm

github.com

Allted/Marlin/blob/V1CNC_Rambo_Dual/Marlin/Configuration.h#L113


      
          * Note: The first serial port (-1 or 0) will always be used by the Arduino bootloader.
          *
          * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
          */
          #define SERIAL_PORT 0
          
          /**
          * Select a secondary serial port on the board to use for communication with the host.
          * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
          */
          //#define SERIAL_PORT_2 -1
          
          /**
          * This setting determines the communication speed of the printer.
          *
          * 250000 works in most cases, but you might try a lower speed if
          * you commonly experience drop-outs during host printing.
          * You may try up to 1000000 to speed up SD file transfer.
          *
          * :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000]
          */

remon_v · July 10, 2020, 6:37pm

Is there a ‘M’ code for it or do I need to do this in PlatformIO and re-build it?

jeffeb3 · July 10, 2020, 6:39pm

You need to rebuild it.

remon_v · July 10, 2020, 6:42pm

Like this?:

#define SERIAL_PORT -1//0

/**

Select a secondary serial port on the board to use for communication with the host.
:[-1, 0, 1, 2, 3, 4, 5, 6, 7]

*/

#define SERIAL_PORT_2 1

remon_v · July 10, 2020, 6:48pm

Marlin\src\HAL\LPC1768…/…/inc/…/HAL/LPC1768/inc/SanityCheck.h:112:8: error: #error “Serial port pins (1) conflict with LCD pins!”

I’m trying port ‘0’ now as my main port is ‘-1’

Edit: Yes! it works with Port “0”
I flashed again and not even connected my laptop, just straight with the TFT.`

Again thanks for the help Jeffe!

remon_v · July 12, 2020, 11:36am

Oké now I mounted the Legs to the MDF plate and I got it 99,9% square now… really satisfied with it.

I haven’t tried to connect the endstops, but now that I got the MPCNC square I want to configure the endstops. On the board I have endstops for X+, X-, Y+, Y-, Z+ and Z- and all those have 3 pins Labeled with S G and V. I have (4) 3-pin connectors with 2 wires. How do I have to set it up?

jeffeb3 · July 12, 2020, 1:14pm

S is signal, G is ground V is Vcc. Don’t use the Vcc.

remon_v · July 12, 2020, 1:46pm

Thanks again, which wire goes to the S and G doesn’t matter right?

jeffeb3 · July 12, 2020, 1:50pm

Doesn’t matter. Check with M119 before trying home.

remon_v · July 12, 2020, 1:52pm

Oké … I’ll try it tomorrow.

remon_v · July 18, 2020, 12:07pm

Hey Jeffe,

So I completely disassembled and reassembled the MPCNC, the gantry was facing the wrong way.
I thought this would have been a quick job, but I had to modify everything.

Thursday I made my first text engraving and it was successful! Very cool!

I just wanted to try the endstops so I ran the M119 command and it says everything is open.

So I rand the home command for the X and then the Y, this working correctly.
Now I wanted to adjust the position of one of the endstops and then I did something wrong.
I ran the home command for X and 1 wasn’t homing for some reason so I pushed the emergency stop button in Repetier.
The tried to connect again and it failed.
I unplugged it from the power socket and put it back in and now I have connection again, but the stepper motors aren’t working…

Edit: after a couple of minutes it’s working again. I ran the m119 code again and X2 was triggered, I don’t know why because it wasn’t.

Then a reboot, everything was open again, I ran the homing commands again and the Y axis is doing good, it levels the axis out nice.
But the X axis is giving me trouble. It homes, but doesn’t level it self out like the Y axis. What can be wrong?

Edit 2: oké I did another test, homing Y works perfectly, but homing X not.

Something is wrong with X2, it doesn’t home right on touch… it’s pushing a bit further and the it homes. So it disalignes the axis completely. I think something is wrong with the wires.

jeffeb3 · July 18, 2020, 1:12pm

Are you sure you have X1 and X2 endstops assigned to the correct motor?

remon_v · July 18, 2020, 1:25pm

Yes I’m pretty sure, but au think it’s the wires of X2… they’re not done correctly. The wires are loose now.

remon_v · September 12, 2020, 10:57am

Hi Jeffe and others,

I’m back! I ordered a new end stop and for now I forget about it.
I build a nice enclosure in the meanwhile, really satisfied with it!

Now I’m doing a new project, a house number sign in oak (designed in Fusion360).
I started with the engraving of the house number.
It went really well, but same as my first engraving… at the end it goes to the 0 position and drills a whole

In the Postprocessor I told it to go to 0 at the end.
Does it mean I’m losing steps on the Z axis?

What could the problem be?

redneckmudrat · September 12, 2020, 11:41am

I am not as well versed in the gcode but this sounds like it might be the same thing happening to you
https://forum.v1e.com/t/z-axis-relaxes-after-a-job-and-it-plunges-into-the-work/20792/7?u=redneckmudrat

remon_v · September 12, 2020, 11:54am

Thanks Mike,

I will look into it!

edit: Yes that’s it… I’m using Repetier