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Re: New 32 bits ARM MKS Robin with TFT??

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this board is pain in the ass,
in begin i did not have temperature readings ,,no possible ti invert stepper motor direction ,,,it is single extruder board .second extruder is not opertional..extruder on display is E1 but working connected to E0 and TH1

i use new config full on english language posted on GitHub . all direction of en stops and stepper motor s are now correct,homing going to minimum,motors workig correct direction
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now i have new issue,,i want set 32 micro steps ,,,i have correct double value for steps X180/Y180/Z800/E1 180 (200 steps x 32 microstep x 20 teethx gt2 pulleypich ,Gt2 belt as per prusa calculator and personal experience) and correct size of movement after homing 300mm x200mmx 400mm ,stepper driver jumper are correct connect for 32 microsteps ,,,

printer use only half of hot bed, changing any valuein config file and resetting board do not give any change,,
changing config and flashing new firmware give no change,,,
changing 8gb sd card received with board no give any change,,

,i am piss of and today i am going to scrap Robin board and replace with some reliable community supported board,,,

Markerbase did not respond to my mail,,,No support from MKS no support from community,,this forum is only place where you can find any info..not so much

if you have 65 usd for trow in garbage go forward and buy MKS Robin

Re: New 32 bits ARM MKS Robin with TFT??

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Yes, MKS robin works with TFT.It's a kit selling on Aliepress include Robin board and TFT display.

Re: New 32 bits ARM MKS Robin with TFT??

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You can land this website to get the English instructions and firmware.[github.com]
If you can't understand well, you can send mail to us please.

Re: New 32 bits ARM MKS Robin with TFT??

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Quote
grimlock
printer use only half of hot bed, changing any valuein config file and resetting board do not give any change,,
Question is, does it move in the right scale then?
Maybe there are other parameters like max. bedsize, preventing the head to move further?

Re: New 32 bits ARM MKS Robin with TFT??

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Still waiting for mine here in Calgary, AB!
My Robin board:
It was supostely shipped out on Nov 04 after two weeks of issues with the makerbase'Taobao and only after paying extra shipping fees, the Aliexpress' Makerbase department took the charge and sent it out... ( Miss Zhong helped greatly!) not sure if it pew I'll have the same ending as my Mks Sbase board.....
Also still waiting, my other Mks Sbase board order, now is 1.5 month and no show, and I afraid that it is lost in postal.......
Very sad for the moment.....
I suggest everyone to order the goods and use e-package that has better tracking system than the register mail!
It arrives fast and fully traceable from the start to the end.
I ordered a hot bed aluminum on Nov 26 and received yesterday....
Hope my experience serve to help others.....
Sad.......

Re: Controller LCD contrast issue

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Quote
enif
I had a similar issue with my full graphic LCD controller, but I could not even see anything from any angle. I resolved the problem by adding a 270R resistor from the contrast signal (trimpot) to the 5V line. I connected the resistor between second and third of the empty pin holes as shown on the photo.
See and THIS is why I love internet.

Thanks, man! You've just saved me a month of waiting for a replacement LCD :)

Are my DRV8825's backwards?

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I purchased a Rumba board and DRV8825 stepper controllers.
I inserted the 8825's just as I would A4988's. I plugged in the USB connector and proceeded to adjust the voltage on the 8825's. I am unable to adjust the voltage properly.
I tried several of the controllers and none of them would adjust properly.
I removed the controllers then plugged in one at a time, thinking that perhaps all 6 at once was too much for USB power. Same result they would only vary by about 0.1vdc.

So I tried some A4988's and the worked properly. I plugged in 4 and they all worked properly.

So I unplugged everything and sat puzzled for a while.
Then it occurred to me to check the pin-outs.
As it turns out the DRV8825's appear to be 180° out compared to the A4988's.

Has this ever happened to any one else?

[www.ebay.com]


A4988's Top Silkscreen_____DRV 8825 Bottom Silkscreen (upside-down)

1 EN------------ VMOT_______DIR--------GND
2 MS1-----------GND________STP--------FLT
3 MS2-----------2A__________SLP--------1A
4 MS3-----------1A__________RST--------2A
5 RST-----------2B__________M2---------1B
6 SLP----------- 1B__________M1---------2B
7 STEP---------VDO ________M0--------- GND
8 DIR------------GND________VMOT---- EN
Adjustment End Adjustment End

Re: New 32 bits ARM MKS Robin with TFT??

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Kind replay from Markerbaseofficial Aliexpress shop

King Zhong
2016-12-06 22:50
Dear sir, sorry for my delay.
According to your desciption, the board has been broken.
You can try to fix it well or send it back to me and we resend you a new one.
What would you like to do?
Thanks.


Luckily i sold board today on Ebay for spare parts or repair
I do not reccommended to order this board until do not have new version vell testd by user
Good bye Markerbase

Re: Are my DRV8825's backwards?

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Yes, welcome to the club :(
The potmeter used for orientation trapped me too...

Re: Are my DRV8825's backwards?

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[attachment 87138 DRV8825-01.jpg][attachment 87137 A4988-02.jpg]I went back an read the E-bay add again, "and interface that are nearly identical to those of our A4988 stepper motor driver board"


I did not catch this the first time around.

Were you able to get them to work with properly orientation?
I have not been able to, I guess I burnt a part or something, not sure what.

Thanks for responding.

Re: New 32 bits ARM MKS Robin with TFT??

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Sorry to jump on this thread but needs must, Flyaway i posted in other post about more english, especially in the tft configuration theres no point having the settings in english and the subheadings in chinese. im trying to get the more g29 and g32 to work on the more buttons but don't know how to change the button names not the icons, when i did the g29 it just crashed into my bed so i loaded up pronterface and went through my computer and it didnt crash,

Re: New 32 bits ARM MKS Robin with TFT??

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,from first day i have problem with temperature reading,inverting stepper motor direction changing homing direction...motherboard do not responding on any changing value in config,i try to set micro-step on board to 1/16 removing 2 jumper and get immediate whistling sound and freezing display ,,it is defective board
MKS offer to replace board .
Robin have new price and shipping to Croatia on Aliexpress shop , increased to 84 usd ,after buying stepper drivers go up to 90usd .
Today i sold board on ebay for spare parts,i have no intention to waste my time and money on not tested and unfinished product sent on market just before Black Friaday and Chrismas time

here is link to Sbase and 3,2 tft for 74 usd includig shipping ..trouble free ,dual extruder,network connector ,auto level power detection,wifi ,,all working .Comunity do not support MKSSbase clone but you can find answer for any trouble .

[www.aliexpress.com]

Re: New 32 bits ARM MKS Robin with TFT??

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To me it looks like the MKS Robin is a tailor made controller for one type of printer ( or one specific customer ). But they are selling surplus production to the masses now. ( maybe the customer went bankrupt? )
Now they try to make the firmware a bit more universal, but that takes time. Too bad, they don't use the power of the open source community for that :D (:D

Re: New 32 bits ARM MKS Robin with TFT??

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New price is reduced to 45 usd + shipping ,,included 5 pcs stepper driver 4988.. Now you can order full kit for price of Atmega and full graphic display,,....I do not believe firmware will upgraded to dual extruder ,,All bunch of connectors on board is usseles,second extruder wifi,autoevel, continous power ,,,on display missing lot standard icon and function you get on standard 2,8 tft display,,.All together looks like bad copy of Chitu motherboard..Highly recommended to avoid order for some time,,

I make true feedback on Ali shop for my order,Ii get bad product and defective product,no respond from technical support,slow respond from ali shop,,no solution for fix problem ,,MKS offer full refund and return board back to China ..That is fact

RUMBA board SD card

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Hi guys,

At this moment I'm using a g3d RAMPS 1.4 board. As an upgrade I want to use a RUMBA board bought from ebay. I get everything working except for the SD card. At the moment I plug in a SD card the board freezes directly. With my RAMPS 1.4 board the lcd display always turns off and on when I plug in a SD card. I also made a video about it: https://www.youtube.com/watch?v=sTrFDSzKi48
Yes I know the wiring is horrible at the moment 8-)
Any suggestions? For your information, I switched the exp 1 and 2 plugs and turned them 180 degrees. The software used on the RUMBA board is the latest marlin version.

Re: New 32 bits ARM MKS Robin with TFT??

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Spent a couple of days playing with MKS TFT32... The board seems to be okay to make a good firmware for it X(
My progress in hacking this toy: [hackaday.io]

Maybe I'll hack Robin too, later. It looks interesting to me...

Re: New 32 bits ARM MKS Robin with TFT??

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thats pretty cool you done that wish i knew where to start to change firmware nice option would be a simple keyboard to input gcode manually be good

Re: New 32 bits ARM MKS Robin with TFT??

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Quote
chris33
thats pretty cool you done that wish i knew where to start to change firmware nice option would be a simple keyboard to input gcode manually be good
Unfortunately there is no way to "change" firmware since Makerbase didn't publish it. You can only make a new one from scratch. It takes a lot of time but no other options available...

Re: New 32 bits ARM MKS Robin with TFT??

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Ordering this semi finished board is big mistake,Developing firmware is impossible mission,You save only 20 usd comparing ordering MKS Sbase smothieboard and 3,2" display buying on Ali ,For 20 usd saving you get sheet board ,incomplete firmware and no support .Now when they have not open source self develop firmware they have big trouble ,Big trouble have all customers who order this board,,Markerbse can offer only refund for defective product,,They can not fix nothing ..So it is easy clone finished product and open source firmware but difficult to make own product ,
HIGHLY RECOMMENDED TO NOT BUY THIS CRAP BOARD
community exist to share experience,,,you do not need to make mistake ad throw your money on street

Re: RUMBA board SD card

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I think I finally know what is going on. The g3d exp pinout is different than the rumba pinout
g3d:

rumba:


due to the difference in pinout it forces activates a reset loop.

The full graphic display pinout looks much more compatible:


So I ordered that display and hopefully it will work.
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