Messages

1

Show"N"Tell ( Your Machines) / Re: DC-K40 Laser conversion issue

« on: January 17, 2013, 02:35:58 PM »

I shall certainly look into all that you have suggested, I think I have an optocoupler somewhere around here

Thought I would share a pic of its first proper burn, obviously a few more tweaks required, I was tweaking bits and bobs through this cut, that's why some of the burns etc are a little deeper in places and there's a few mistakes, perhaps gcode, perhaps missed steps, but she's a runner and that's the main thing, I think it's time for a full stop.




Thanks again for all your help

2

Show"N"Tell ( Your Machines) / Re: DC-K40 Laser conversion issue

« on: January 17, 2013, 09:58:32 AM »

Hi again,

Worked beautifully!

Took me a little while to implement as I wanted to do a few checks etc before taking the plunge, but all went very well & I'm very happy.

Thanks

I've been checking out your website, there's a lot of good stuff there, so I shall have to do some more reading. Your machine looks awesome. These forums should be glad to have someone as clued in as you.

Anyways that's enough of all that, I'm off to burn things

Thanks again.

3

Show"N"Tell ( Your Machines) / Re: DC-K40 Laser conversion issue

« on: January 17, 2013, 06:57:49 AM »

Hi thanks for quick reply, may I just clarify what your saying with this picture



This is what you mean right? I've put the original instructional jpg in the bottom corner so you can check.

I understand what your saying about the no guarantee, I'm willing to face the consequences

Thanks Again

4

Show"N"Tell ( Your Machines) / DC-K40 Laser conversion issue

« on: January 17, 2013, 04:55:46 AM »

Hi there,
I recently got hold of one of these cheap DC-K40 china lasers, I had read many posts about them, mainly about the terrible Moshi Software, but also about how the main controller boards tends to die quite quickly. Sure enough, within 2 hours of setting it up, the Moshi software fed the machine some erroneous code, the head decided to bang its self on the bottom of the Y axis repeatedly until I managed to switch the machine off. When I started it up again it was clear the controller had croaked. The seller didn't want to send a replacement board (I don't know why) but gave me a £50 refund. Being that this was all the money I had I bought a tb6560 to control it (yes I am aware these boards have some issues too, but no money for DSP) and started to follow the instructions here.......


http://www.cnczone.com/forums/general_laser_engraving_cutting_machine_discussion/149028-conversion_tutorial_dc-k40_tb6560_blue_board_ebay_non-professionals.html

Everything went smoothly until I went to wire up the laser to fire from the Z axis. I realised that the markings on my laser supply are different. In the original tutorial he connected the "TH" on the laser supply to "Serial Pin 4"(Pin25 on LPT) but my laser doesn't have "TH". The laser firing is done from a connection marked "L"(5v) and "G"(ground I assume), when this connection is made the laser fires, in fact even the test fire button is connected here.

Here are a few Pics




I have posted on the original tutorial page and although there has been a lot of views so far, no advice has come back so far so I thought I would post here too, as you guys tend to know what your talking about too
I'm quite new to electronics, and all I know is what I've taught myself, but that means when I hit a brick wall, I'm truly stuck.

Anyways thanks in advance, any help would be greatly appreciated.