"There was a problem sending data to the laser."

[foxandclover (Tara)]

Hi! I am having some trouble getting Lightburn to connect to my laser. It was working fine a few days ago but I’ve been trying to get it back up and running all day and I’m stumped.

Background

iMac running Big Sur
Latest Lightburn software
Aeon Mira 9 Laser
USB port on laser to USB port on computer (have tried different cords)
Lightburn console error - “port failed to open - already in use?”
Machine settings error - communication with controller failed
Start button error - “There was a problem sending data to the laser. The machine may be busy or paused”

Things I’ve tried:

• restarting laser and computer multiple times.
• redownloading Lightburn software and have tried older version as well
• going over settings
• lightburn can find the device (laser) but when I click start, it won’t proceed

Anyone have any insight? Thank you!

[foxandclover (Tara)]

Just wanted to update you - I downloaded a version from August 2021 (1.0.00) and now it’s working fine. Not sure the reasoning but wanted to share for anyone who might experience the same.

[Rick (Technical Evangelist)]

Tara is working with a Ruida control system where there is a different driver required. Apple has been introducing changes to their USB support that are challenging.

This update is making lightburn freeze a lot

Do you have it set to ‘Auto’, or have you selected the USB port it’s connected to? Try selecting the port. MacOS with USB has been a giant pain in the rear - Apple keeps changing things. Since your dump says MacOS 12.x, I’m guessing that’s the culprit. Try downloading the new FTDI driver they’ve released for it: VCP Drivers - FTDI