4 Axis CNC Stepper Motor TA8435H Driver Board Mach 2 3 question

[ghostshells]

Shalom Friends,
I made a 3d CAD model of 5 axis board and I would like to let it be my small contribution to all of you. You are free to use it as you wish.

Wish Best of luck for all of us
Vlad

[moog]

Wow, hot images..

Scanned with 3d-Scanner?

[ghostshells]

Not a all. I made it in solidworks, that way it's easyer to me to configure my mashine layout. If any one need I can publish a power supply model to.

[kolias]

hello,since my cnc project is comming to the end I am planing to buy one of this boards(I guess they beat my L297-8 DIY vesion) ,can you recommend one ebay seller?

univeloptech?
Iwannabuy?
easysupply?
yourschoices?
Just too many of them

If i got this right the boards can only give 1,5A and not 2.5A as they say?

And to all of you who have this board working can you share your expirience with them?

Read the post here carefully and dont buy any Chinese board unless you are good in electronics.

[kolias]

Not a all. I made it in solidworks, that way it's easyer to me to configure my mashine layout. If any one need I can publish a power supply model to.

That's a nice work man, thanks for sharing

[Jur1]

Hi,

I think my platform is not working because of the LTP-port on my laptop... I connected a led directly to ports all over the connector and It did not blink at all. It was just on all the time. What do you think is this the problem or should the blinking be so fast you dont notice it at all ?
Is there a easy way to test LPT-port?

[renatopub]

Hi,

I think my platform is not working because of the LTP-port on my laptop... I connected a led directly to ports all over the connector and It did not blink at all. It was just on all the time. What do you think is this the problem or should the blinking be so fast you dont notice it at all ?
Is there a easy way to test LPT-port?

My 8435 board has 5 LEDs that blink when a signal is present. Well... I can't se a real blink, what I see is the LED fading in and out as the stepper accelerates and decelerates. So I suppose you that, as long as your LEDs are coupled in the right way, you would see them glowing as the train of pulses come up.

[zeed]

Read the post here carefully and dont buy any Chinese board unless you are good in electronics.

well,electronics are not such a problem,I have two options:

1:Make 2 more diy halfstep l297-8 from pminmo site (already sucesfuly builded one for testing purposes)

2:Buy one of these chinese drivers
I am working on very limited budget so these are my only options

[moog]

Hi,

I think my platform is not working because of the LTP-port on my laptop... I connected a led directly to ports all over the connector and It did not blink at all. It was just on all the time. What do you think is this the problem or should the blinking be so fast you dont notice it at all ?
Is there a easy way to test LPT-port?

Perhabs a parallel Printer?
..try to set the parallel-Port to ecp / epp in notebook bios, perhabs this helps.
What's with the led's on the cnc board, is the any reaction if its attach to your notebook?

Can you identify your LTP-Port in hardware-manager and when with what parameters?

[renatopub]

well,electronics are not such a problem,I have two options:

1:Make 2 more diy halfstep l297-8 from pminmo site (already sucesfuly builded one for testing purposes)

2:Buy one of these chinese drivers
I am working on very limited budget so these are my only options

Fair enough. All is a matter of measuring how much your time is worth. If you have time in your hands and not much money (been there...) here is my advice:

1-Get the 8435 datasheet and read it over again until you know really well how the chip works. When you know that, the Chinese board will be pretty obvious to you as it is just a wrap over the chips.

2- Read this thread in detail. There is a lot you can learn. Then read everything else you can find about steppers and understand the electronics involved.

3- Define exactly what you need in terms of current, voltage, stepper model etc... In the end of the day this will translate to your torque and maximum speed (you do know the requirements for the work you have in mind right? Else just go back to the drawing board). I think this is the deepest problem with people getting into CNC control or even robotics in general: they don’t even know what exactly they want to achieve.

And that is pretty much it. If you have time in your hands, even with not much money you can do great things. All you need is patience to study and discernment to know when you are ready to wire it up and press the power switch.

[electrocutedbad]

Hello everyone. I need a little help here.

Here's my status: I got my 1,5 A unipolar 6 wire steppers; 4 of them. I got the Chinese 4 Axis board from Ebay. (Kolias' board: HK1

I measured the resistance between all the wires and figured these out about the motors:

For Phase 1 of the stepper:
Blue and Yellow Wires: coil ends
White Wire: common


For Phase 2 of the stepper:
Yellow and Red Wires: coil ends
Black Wire: common

Now, can you help me and tell me where to connect all these wires on the board?

I got A+, A-, B+, B- for all four axeses on the board; X, Y, Z, C.

And there're M+, GND, M- connections at one end of the board connections.

Thanks so far, I've already learned much from this thread.

Peace

[tiffyted]

The motors can be connected in a couple of different ways, but easiest would be as follows
A+ Blue, A- Red. B+Yelow B-Red Insulate the 2 black common wires.

You can connect for parallel, but for this you should identify the pairs of coils you will use as you will only use one half of each winding i.e. the black wires will be A+ and B+ and either the Red or Blue will be the A- and either the Red or Yellow will be the B-

If the motor turns in the wrong direction you can reverse it by changing one set of wires for example A+ to A- ,A-to A+. Only change one pair. Most software gives you the ability to reverse motor direction in the setting up.

Hope this helps