Machine: K40 came with M2 controller
Board: Cohesion3D
Firmware: Smoothie
Problem/ Question: Hello everyone,
I bought a K40 Julong laser with an M2 controller, bought the Cohesion3D board, changed it inside the laser and I’m trying to work with it via Lightburn.
My laser is properly grounded (checked with a voltmeter), on a separate electrical circuit from any other device, including the power for the C3D board or the computer, the usb cable is screened and filtered, connected via a usb hub with additional power in it, short lenght cable, so no problems there.
The board installation and setting up in Lightburn was done accordingly to the specs found on this site documentation pages.
Lightburn is connected to the laser, it can control it, homing and moving around are good, problem starts when I try to engrave or cut, so either “Fill” or “Line” settings in Lightburn. The job stops at random times, with either the Lightburn message prompt that the usb connection is lost, sending me to the troubleshooting page of Lightburn (https://docs.lightburnsoftware.com/Troubleshooting-Connection.html#losing-connection) or no message at all, just the console displaying the “port already in use” error.
Tried a com port listening software that showed no other device or program in my computer messing around with that port but the Lightburn, the com port is set to 115200 baud rate, the board is responding to that baud rate, Lightburn is set to ignore all other ports used by the computer as instructed by the troubleshooting page of Lightburn (link above), I even tried with a remote access and removed every single usb cable (including mouse and keyboard) from the computer leaving nothing but the A-B usb cable that goes to the laser, in Device Manager I unchecked the box for FIFO buffers in com/properties/advanced, the computer mainboard has usb 2.0, 3.0 and 3.1, tried every option there no dice.
Help! Please!
Did you provide those pictures? We need pictures to understand your setup!