I don't know what's on screen, but if you're looking for a nice, cross platform program to send some gcode, I really like UGS: https://winder.github.io/ugs_website/. Source: about 2 years ago

Connect the 3018 to a PC, use a gcode sender like Candle or gSender or cncjs or UGS and then type $$ in the console. Source: over 2 years ago

I'm a little cheap+lazy and I just use a simple electrical contact probe using https://winder.github.io/ugs_website/ and the probe plugin. Flipping the part I generally butt the stock against a fixed parallel, then probe using the tool for X+Y (offset by the tool radius), and Z probe as well off some of the un-machined stock. Source: over 2 years ago

4 - Can you try to start the spindle from a PC (you will need a gcode sender: Candle, UGS/UGP, cncjs)? Source: almost 3 years ago

Hi guys, you don't actually need to get a new motherboard to use lightburn on a k40. Check out meerk40t, an awesome free k40 whisperer replacement which is 100 times better. This in itself is a great achievment by the programmer David Olsen, but what makes it amazing is that you can run the software as a kind of Ruida emulator and it will turn your k40 into a ruida machine and then lightburn can connect to it. I... Source: about 2 years ago

I vouch for https://github.com/meerk40t/meerk40t A more modern alternative to Whisperer and actively maintained - used on MacOS without issues. Source: over 2 years ago