Help with RDC6442G

[pedrodrigues (Pedro Rodrigues)]

Good morning, gentlemen.

I’m here to ask for help with my RDC6442G.

I’ve tried everything and I can’t get it to work using RDWorks or even Lightburn.

Is there anyone here who uses an RDC6442G and could send me the configuration files?

So I can understand what’s wrong.

My machine is a K40, the home screen is in the upper left corner.

I would appreciate it if you could share who has the file; I really can’t understand what’s happening.

Thank you.

[joed (Joseph Dodds)]

We don’t recommend taking/accepting random config files, but if you’re on Windows and don’t have any connection to the controller whatsoever, especially over usb, you may need to manually install the driver for your controller.

You can either load the driver at the end of the LightBurn install (shown below).

Or, you can download the FTDI driver directly from their website:
https://ftdichip.com/drivers/vcp-drivers/

If you’re still having connectivity issues, please let us know.

[pedrodrigues (Pedro Rodrigues)]

It connects. The problem is in the configuration; I’ve changed it several times and it doesn’t seem to respond.

So, ask someone who has a similar file to test and see if it works correctly.

[ednisley]

@pedrodrigues

• RDC6442G
• machine is a K40

That is an unusual combination, particularly because the K40 power supply does not play well with Ruida-class controllers.

You need the Pro version of LightBurn for a Ruida controller.

Some previous discussions may help:

K40 with DSP Controller

Anyone successful at controlling the power level of a K40 with a DSP Controller? I tried many variations i researched online. I’m using a TopWisdom 410C. I got the steppers to work, homing is a bit erratic, however. the Gnd,5V, and LPWM1 from the 410C to the power supply, Gnd, LPWM1 to IN or L, does not seem to laser power. I purchased a few PWM to 0-5volt converters, tied them to Gnd and IN (potentiometer removed), but no success. i would greatly appreciate any input or suggestions. very …

Max power setting with K40 lps and Ruida controller

This was a post in this forum from 2019 loather Apr 2019 I ended up taking a 10K linear potentiometer, connecting the DAC output to the top terminal, GND to the bottom terminal, and the wiper to IN1 on the LPSU. Test-fired the laser at 100% and adjusted the pot for 17mA. Now I get 0-100% and the scaled power settings are as linear as they were before. I was hoping that the user that posted it is still on here and can share a wire diagram of how they added the 10K linear potentiometer. I am …

K40 Laser (Ruida) no longer working after 1.4.00 update

I used Lightburn for 30 days with no problems and ran a diode and CO2 laser with it flawlessly. I had Meerk40t/ruidacontrol running as a translator and was happy with Lightburn’s capabilities. At the end of my 30 days (today) I purchased a license and was asked to update. As soon as I did that the K40 device disappeared and when trying to recreate it the Ruida option no longer appears in the device wizard as an option to select. I need some help please!!! Looks like others have experienced simil…

How do I upgrade k40 to Ruida controller

So I got my k40 3 weeks ago and don’t really like the software like k40 whisperer and the stock and want to use lightburn but also replace the controller with a dsp ruida controller. Anyone know a good starting point, any tutorial videos or wiring diagrams or good dsp ruida controllers to buy that are cheap enough? Thanks.

[pedrodrigues (Pedro Rodrigues)]

Good morning.

I’ve managed to get everything working mechanically; I had a faulty sensor that was malfunctioning.

Yes, I use LightBurn Pro.

I’m just having a problem where the laser keeps firing when it moves to cut or engrave something.

All the connections are correct; is it something in the LightBurn settings?

I need your help, thank you.

[ednisley]

@pedrodrigues

• All the connections are correct
• the laser keeps firing when it moves to cut or engrave something

Pictures and a description / schematic of the actual connections will help us look over your shoulder.

The typical K40 power supply does not work well with a Ruida controller, because it does not have an Enable input and depends on the controller turning the PWM signal Off during rapid moves.

Telling the controller you have an RF tube may improve the situation. Before you change anything, upload screenshots (not cellphone pix) of the Machine Settings → Vendor Settings → Laser Settings values.

[pedrodrigues (Pedro Rodrigues)]

I switched to RF and it worked perfectly.

[pedrodrigues (Pedro Rodrigues)]

The recordings ended up with double recording. Only in the recording part.

When I request to record with fill, it becomes duplicated like this.

[ednisley]

@pedrodrigues

I switched to RF and it worked perfectly.

Excellent!

The power supply has the L input for the controller’s L-ON output and, assuming it’s wired in the way shown in the pictures, then that signal should shut off the beam during rapid moves.

Upload a screenshot of the settings so we can take a look.

@pedrodrigues

recordings ended up with double recording

If the distance between the two patterns was smaller, then it would be fixable with Scanning Offset Adjustment values, which are typically fractions of a millimeter.

This can be due to a very slow power supply, which would be unusual.

However, the offset looks much too large for that, so let’s start by eliminating mechanical problems.

This test pattern is useful to identify mechanical problems:

Backlash.lbrn2

Scale it uniformly to fill the platform and run it as fast as the machine will go in Line layer mode with Enable optimizations turned Off and power set to mark a sheet of cardboard. Any differences from the design will be informative; a crisp photo will show us what you see.