Oh thank you , thank you...just goes to show that a picture is worth a thousands words.

 

Does anyone here have a smoothieware config file already setup for this machine?

 

Here is my current config, using DQ542MA on X, Y, and Z - directly from the pins. Endstops sets with both Y and X to max so that I can access the large spillboard with the router almost out of the way.
Acceleration and Juniction_deviation is not fine tuned.

 

Hello evreyone

i already finish from build my C- Beam xlarge without electronic thing
i have my smoothieware and DQ542MA but i don't know anything about wiring and how to adjust the cables

any advise or video to show in details please?

Thanks

 

Check out my website Blog page:

www.3dTechWorks.ca

It has most of the info you need.

MG

 

Thank you .
i ll start wiring now and if your hear in news there someone burn his house because of cnc he will be definitely me

 

Well, it's either that or give up completely...

Sorry, my blog does not mention the Smoothieware board, but it has lots of info on everything else. Smoothieware should have instructions with the board, if their product is worth it's salt. Also, check on the OB Forums, there should be info there or someone you can ask.

A couple of hints to prevent fires

1. Run a separate chassis ground wire from each axis (usually tied to a motor mount screw), the base, and the power cord to a single point ground near your power supply. Use star washers on all screw connections. Ensure every part of the machine is properly grounded (AC chassis ground) Do not connect DC (power supply - output) to this ground.
2. Connect each DQ542 to the power supply through its own pair of wires, with a 5A fuse in each + line. Do not daisy chain the power to the stepper modules.


MG

 

i work in my smootheiboard from yesterday and i do well so far
but i have one question why i should use external stepper driver while i can connect it to smootheiboard

my friends maybe you will say this is an stupid question but i know noting about it

Thanks in advance

 

From : general-appendixes [Smoothieware]
Stepper motor drivers on Smoothieboard can handle up to 2Amps per driver. - If you want to use larger stepper motors than the Smoothieboard's drivers can handle ( 2A max ), you need to use external stepper drivers.

In the end, it all depends the stepper you got. If you got bigger stepper, and wants to get all the power out of them you will need to feed them with more than the 2A the onboard driver can handle.

 

There is 425 oz. in. steppers available from Steppers-online.com that run on 1.5A. I'm running them but with a Gecko G540.

 

Hello friends thanks for answer
finally i know how to put an external drive to smootheiboard
but when i start to connect motor i remember that i should put 2 motor in same axis and when i read smoothie website they just explain the idea just for the local driver


can anyone help me please?

 

Just wire the outputs on the board for the Y axis to the inputs to your 2 Y axis stepper drivers in parallel, ie step to step, dir to dir, enable to enable, etc. Then wire the motors to the two stepper driver outputs. Done. Remember that your 2 Y axis motors will have to turn in opposite directions, so wire one motor up with one of the phases reversed.

MG

 

Thanks A lot
i will try it today

 

finally i finish it and everything work perfect

only problem with measurement..... i don't know why
when i make designe by aspire and try to put it in cncjs its not working fine
is it from the confine file in the smoothieboard ?

i use cncjs because its the only controll software work on smoothieboard

any idea?

thanks in advance

 

Use bCNC

 

Also use millimeters

 

i download it and i face the same problem
i think i have the problem with config file in smoothieboard
anyone can provide me the config file to this type of cnc?

 

I got this from someone else on here.

 

Current settings for all alpha beta gamma, for high torque they should be set to 3.0 as that is the listed current on open builds website.

 

BTW I am 99% done with my build. I haven't tried it yet. These are the settings I was told to use. Please share your results and/or any issues you have as I'm sure I will have the same. Hope it works out for you. I am designing all of my stuff on Aspire 8.5 and will be using bCNC. I've heard nothing but good stuff about those programs. If you do have problems, check the config file first then triple check your wiring.

 

thanks a lot

iam sorry but am new in this stuff but I think you mean I should change some setting in external driver

right?

 

On the config file.

 

For Dip settings I have 1,2,7,8 ON, the rest of them are in up position OFF on the DQ542MA external drivers.

 

Additionally, I got this from Richard Ibbotson on the smoothieboard group on Google. You might need a dedicated 5v power supply. I've ordered one on Amazon and will be adding it to my system.

"If the wiring you show works, then please ignore this post, and enjoy Smoothie.
However the setup you describe is almost the same as our painful experience which we managed to resolve. The problem of using external stepper drivers is their opto-coupled inputs and the high current demands. This together with inconsistent component values on the Chinese boards, poor quality Opto Couplers, and some clever stuff on the boards which puts demands on the step pulse width.
For the DG542MA, then schematics online show the input circuit to be an opto-coupler with a series resistor of 200 ohms or 270 Ohms depending on the schematic you choose online. The step usually uses an opto like the 4N33 device, and the EN and DIR something a bit cheaper. These have an diode Vf of around 1.25V, so for a 5V supply, the current through the opto can be up to 18.75mA. When you parallel two drives as we did and you are then you are pulling twice that on each I/O pin. With 4 drives and STEP, EN and DIR, you are trying to pull a massive 225mA through the LPC processor ground and from the Smoothieboard 5V supply. We are clearly working way outside the specification for the LPC1769, but we have no experience of actual damage to the processor. However output voltage swings are only specified at 4mA per pin,and a total of 50mA for the device. So we cannot expect switching voltage levels to be consistent at 5 time rated current, and so the current will actually be less.Since the opto couplers are current driven, what we found was that they massively slow down, which was a problem for the step pulses. Increasing the step pulse length(8us) had some improvement , but not full fix. Our problems are further made worse as we have GLCD which is also current hungry on 5V from Smoothie and USB too. All this gave us a world of intermittent operation.

By implementing a high current drive for the opto-couplers, a good high current 5V supply on our board, all our problems disappeared. Even some SD card problems which may have been caused by the ground pulling of the IO pins."

 

Nope. Smoothie can max handle 2amp. In the config included external steppers are used. So current setting is not used, and is ignored.
On the DQ542 , set the switches to the correct (or close).

 

i don't know what i should do

this problem can not be solved i try everything but problem still there with big smile

 

Try to describe your issue once more. I am not sure if I understand that is not working from the post above.

 

if there is anyone have DQ542MA and connect it with smoothieboard please provide the confige file and SW diagram (ON-OFF) Please?

 

sorry I didn't dee your post

my problem now
when I designe anything in aspire with some measurement and send it to cnc
the designe size become wrong become bigger than what I put in aspire

 

For my config file, as you have seen earlier in the thread, I use the following dip switches set:
SW1:ON, SW2:ON, SW3:OFF, SW4:ON, SW5:OFF, SW6:ON, SW7:OFF, SW8:ON
That is on the DQQ542MA for the Nema23 345OZ - 3.0A steppers.
AND important: Firmware for the Smoothieboard. I use the latest Stable version, not the latest build. My card came with an older version of the firmware, and several of the settings was not working as expected.

Not faimiliar with your program, I use Fusion360 and send it to bCNC. - Then you say the size is wrong, how much are we talking about. If you have a box, like 50mm x 50mm, will it cut at 50.5mm or is it like a much larger difference?
I have finetuned from the 800steps for the three axis down to around 792 and cuts now a 50x50 box at 50.03mm

alpha_steps_per_mm 792.481392
beta_steps_per_mm 793.277056
gamma_steps_per_mm 792.481392

But you must finetune it for your machine as 800 is the "teoretical" numbers. A nice calculator to use is: RepRapCalculator