I'm looking for CNC3020-800W info

Well, after a lot of years and over 100+ OK transactions

on ebay, the CNC controller transaction thru ebay

is a dud. I got the wrong item sent to me and returned it.


So I get to start from square one with what to do about a CNC

controller.


I have to admit the GRBL CNC controller was a bit of an impulse

buy and I didn't do any looking into what I was buying.

The good news, live and learn...more about what I need/want.

I need to do more homework.....

DW
 
After looking over a CL offering of a CNC

converted Harbor Freight small tabletop mill,

and concluding it was too small, over priced

and it had issues,

I pulled the trigger on another Ebay CNC Controller

Board and it was correctly and safely delivered.

It is a RATTM MOTOR 4 Axis TB6560, a Mach 3

parallel driven board.

However, it is suppose to include an email sent

PDF Manual, that I have not seen yet.

Anyone got one of these boards going?

DW

.
 
I received the email "manual".

It is an exercise in entertaining China

language translation.

I swapped the controller board into the JY5300

box with the 24 volt supply. The only

issue I have is the JY5300 has a 7 pin Limit

switch connector and the JY5800 has an 8 pin

limit switch connector Hmmmm.

So Now I can talk to the stepper motors

from Mach 3.

One Amazon review of this controller board

was less than complimentary.

And suggested the board did not function

well and was Very Noisy.

I can say it is Quite noisy when NOT

moving any of the steppers.

I'll go over the Mach3 settings to see if

it can be made to run quieter/happier.

DW
 
I have been working on my Learning

curve with Mach3 and Fighting an

issue with the DRO units/calibration.

It was looking like I could NOT change

from mm to inches!

After MANY rounds of failure,

I pulled out the Dial indicator to see

just what was happening.

Low and Behold, this "microstep"

is a THING!

I thought a stepper motor had FIXED

steps per Revolution.

NOT THE CASE!

Mach3 has a default setting of

2000 "steps per",

and I Needed 24,000 to make the

DRO display correctly, WOW!

I always laughed when people

talk about 10,000ths of an inch,

Not really in MY World....

NOW I am seeing IT!!

OH WOW!

I KNOW this low Budget China CNC

machine is STILL laughable for usable

"Tenths" but it is entertaining to

see it...

This is the board I am playing with.

IMG_20240821_164645959.jpg

DW
 
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I gave the "Motor tuning" my best shot along

with trying the various Driver Board settings.

Things did Not look Great...

I found the fastest stepping speed was best

but still problematic.

Because the JY5800 CNC controller had issues

with the Parallel port function BUT still workd

Offline, I wanted to keep it in tact and mostly

to use it to drive the Spindle motor and cooling

system.

Where the JY5800 controller had the stepper

motors running quietly and the motion was solid

and repeatable, the RATTM MOTOR 4 Axis TB6560

controller was running as one reviewer had claimed:

"Brian W (2 stars)
Reviewed in the United States on September 8, 2021
Verified Purchase

I've a cnc machine at home and was looking to
change out the controller board in hopes to use
Mach3 instead of the basic onboard programming.
I use a UC100 controller at the parallel port.
I bought this because I used to have an older
Chinese 3 axis board with the same driver, and
it work well for as cheap as it was then.
This board, while seemingly functional, didn't
perform well at all. I tested each port with
several different stepper motors or different
sizes, at different supplied voltages, with
different current and decay settings and at full
/ microstepping. All performed pretty poorly.
The motors were always slow, often jittery.
The torque was there, but the rotation was not
stable. And the noise was horrid. They were LOUD.

Despite the board performing poorly, the Seller
has great service. The part was shipped sooner
and arrived way faster than originally estimated.
Return policy was fair. I'd buy from them again,
just not this particular product."


Links where this board is available:




Seeing I take most reviews with a great deal

of skepticism, I gave this board a good shot.

I put the JY5800 controller back together and

connected the spindle to make some chips!

I ran a few Mach3 Wizard programs and as I

suspected, there are too many missed steps

to be accurate or repeatable.

The biggest problem is the Y axis.

I suspect the mass of the Y axis

is the problem and smaller machines may work ok.

The sad thing is this board uses the same

driver chips as the JY5300 and JY5800 controllers.

So it looks like a design flaw of this board.

Let me know if you have this board working OK.

DW
 
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