[erikk]

Im new here and i want to post my first topic.

I hope someone can help me.

What i have:

1x TA8435H Driver see pic
3 x stepping motor see pic (6 wires)
1 x 24 V 5A power supply
1 x lpt cable
Mach 3

My problem is that it wont work.

I wired my stepping motor but they wont turn???

I tried several wire options. But wont work?

Whats my problem??

Are the stepping motors not good?

hope someone can help.

Gr Erik

[erikk]

When i put my power on to the board and plugin my lpt cable the leds flash one time.

When i put my'motor on one off the axis it gives a litte small (very small ) turn

[erikk]

link to the datasheet off the motor.

http://img85.imageshack.us/img85/7376/kp56hm6lv.jpg

[erikk]

or is it a pin setup problem??

Gr ERik

[erikk]

I also tryd these pins

http://www.happy-ebuy.com/pdf/3%20ax...%20version.pdf

[renatopub]

My board is a bit different than yours. I have LEDs that show when pulses are coming from the LPT. Do you have that?

I think the first thing to check is whether the LPT is sending the pulses or not...

Your motor connections look good, as the black and white cables are for use in unipolar configuration only, and that is not the case for your board. So you are good using the sequence color sequence Green-W/Green- Red-W/Rred.

So I would first make sure the direction and pulse lines are doing what they should.

[renatopub]

Somethings just came to my mind. Could it be that you swapped the direction/pulse signals when configuring your software?
What software are you using?

[erikk]

Im using mach3

[erikk]

My board is a bit different than yours. I have LEDs that show when pulses are coming from the LPT. Do you have that?

I think the first thing to check is whether the LPT is sending the pulses or not...

Your motor connections look good, as the black and white cables are for use in unipolar configuration only, and that is not the case for your board. So you are good using the sequence color sequence Green-W/Green- Red-W/Rred.

So I would first make sure the direction and pulse lines are doing what they should.

Mine also got leds.

the wire's are connected Red-W/Rred- Green-W/Green

So i changed to youre wire setup. The driveshaft is now blocked. In my first wire setup (Red-W/Rred- Green-W/Green) i could turn the drive shaft by hand when its connected to the board.

Is that ok??

[erikk]

Somethings just came to my mind. Could it be that you swapped the direction/pulse signals when configuring your software?
What software are you using?

What do you mean with: Could it be that you swapped the direction/pulse signals when configuring your software?

I don't know how to do that so i think not!!

[renatopub]

What do you mean with: Could it be that you swapped the direction/pulse signals when configuring your software?

I don't know how to do that so i think not!!

In Mach3 you MUST configure what pin of the LPT does what. Do you mean you did not configure that? Each board has a different assignment for the pins, so you have to tell Mach3 how that is.

[erikk]

In Mach3 you MUST configure what pin of the LPT does what. Do you mean you did not configure that? Each board has a different assignment for the pins, so you have to tell Mach3 how that is.

I tried many different pin setups for the board but it won't work.

I downloaded the new version mach3.

Maybe the problem is that in the installation off mach3 the LPT port is not found??

I followed the whole manual of mach3. rightclick on the mach3.exe file and let it work in windows XP and then do the driver test. Won't work either.

About the pin config. How do i know what numbers i have to change?

Gr Erik

[renatopub]

So I suppose you configure Mach3 according to the TA8435H manual pages 9 to 12 right?

If all the above is OK, I would try somehow to check the LPT lines with an oscilloscope to make sure there are pulses there.

[erikk]

hmmm have to find someone with a oscilloscope.

I think windows 7 can also be the problem??

Gr Erik

[renatopub]

I think windows 7 can also be the problem??
Gr Erik

That I don't know, best would be to ask mach3 support team.

Without seeing what is going on with the LPT port it is mostly a trial and error approach.

[erikk]

I think the problem is that in windows 7 mach3 cant find any lpt port.

When i install Mach3 (newest version) it says cant find any lpt port.

Then i put the .reg file over it and do the driver test. nothing happens.

Think i have to figure that out.

Some say right click on the mach3.exe file and choose for working in windows xp and then it should work.

Otherwise im going to buy a cheap pc with windows xp.

When i found my problem i will tell you.

Really, thanks for youre help :banana:

[erikk]

by the way do you have tips for good CAD/CAM programs??

Gr erik

[renatopub]

by the way do you have tips for good CAD/CAM programs??

Gr erik

At work I have used SolidWorks as CAD. Over all I like it. I have also tried SolidCam at work, but despite being way too expensive for home use, it is also over complicated. LazyCam could be an option, but the developers apparently gave up on it leaving an eternal beta version online.

In the end I write all my G-code by hand, and that is for the following reasons:

1- Automated G-code generation will (as with any sort of software) have bugs for sure, and a bug in CNC means that something will eventually collide/crash/burst/snap and (if you are doing metal work as I am) it is going to be ugly.

2-It takes an awful lot of time to set-up a job on those fancy CAM packages. Most of what I do can be reduced to a few squares/triangles/circles making it way easier to code by hand.

3- If I eventually decide to jump into the fancy automated 3D milling I am sure to need all the CNC knowledge one can only gain by doing it the hard (hand coded) way in the first place.

[jjobezo]

hmmm have to find someone with a oscilloscope.

I think windows 7 can also be the problem??

Gr Erik

You've got that right. I have had several problems with software on Windows 7 because the couldn't find the port (LPTx, usb, serial etc). Once the software was updated (after numerous complaints) it worked fine. On one machine I had to install a virtual XP operating system. This is no longer needed with correctly up dated software.

Good luck with your system.

[erikk]

hmm so it is possible with windows 7??

I have installed windows virtual pc now.

Only motor still not turn. I have signal. see the picture.

Can someone tell me if he see some different??

Port current state is that normall??

Gr Erik