Replacing electronics and Firmware

Dear friends
I am a professional wood machinist and not user of Linuxcnc.
In my shop except my woodworking machining center, i also have a 3040T 4axis Chinese, Vevor mini cnc.

The two controllers of this "machine" have been burned.
Since both of them where controllers with build-in stepper drivers, i 've decide to go for another solution.

Stepper drivers DM556 with a new breakout board.

By changing controller, i have to change firmware too.
Its a small machine and does not worth a lot of money, but its not nice to stay damaged.

So i have the following in mind and need your opinion.

---First i am thinking to order a new controller like this. www.vallder.com/en/c/cnc-pc-cards/mach3-5-axis-board-detail

---And four stepper drivers DM556

---I have an old 32bit PC, another old HP and a Dell optiplex 745 64bit.
Do latency in each off them OR find another old PC.
Is it better for LinuxCNC to work on a 32bit PC?

Buy an extra parallel port for PCIe like this store.cwc-group.com/mcs9815cv.html?viewfullsite=1

Can you tell if these parts will be ok for the machine to work again?

Later i am to replace its motors, its lead screws with ball screws and put a smoothstepper or a Pico to drive stepper drivers but not right now.

Thanks in front
Kosmas

P.S. When this "machine" came two tears ago, i 've tried to make it work with Linuxcnc but notning was moving, because of the paraller port i believe.

yes it will be working fine
it is the standard machine setup
and the DM556 are slightly over for this
you can go for cheeper 542T Clones if you want to safe money

the PC will also work
PLEASE Download the LINUXCNC MINT DVD/USB and try it out from the DVD/USB what latency the PC got
everithing below 50000 Nanoseceds will boost your setup

Thank you bbsr_5a

"yes it will be working fine"
Thank you

"DM556 are slightly over for this"
I will replace my 4 motors soon and lead screws too.
Now is 6V-2A-62oz.in motors ->with 4.8V-3A-396oz.in
And at the link in my first post, DM556 costs only 18Euros/piece-3 days delivery.

"the PC will also work"
Its only latency that matters or i have to choose between 32bit / 64bit?
5V parallel port for PCIe is mandatory, yes?

Nice photo
I thing this is the controller i want to use.
What is this (2 pieces of electronics) on the left of the power supply, above your controller?

And a final question quite difficult.
My ex (USB) controller had a good responce in cutting speeds 20IPM on soft materials.
Is it yours (this green breakout board) able to do this?

Thank you

The maximum step rate you can achieve with software stepping in Linuxcnc, will depend on a number of factors, but the most significant of those will be the latency of the PC and how fast it can run a the base-thread. (generally about 20kHz) Remember though that acceleration and speed are in multiples of the basethread speed so if your PC is running a 20kHz base thread acceleration will go from 7.5 to 10 to 20kHz. Most step motors will baulk at an acceleration increase of double their speed especially if they are already near their speed limit. So your practical limit may be more like 10khz.

How fast that will get you going will depend on your steps/inch scale.