I got a K40 the other day and the power supply blew the fuse (I’ve replaced the fuse and bridge - they both blew a 2nd time :/), the seller is shipping me a replacement. I’d like to eliminate shoddy wiring and I’ll probably upgrade the 240v wiring to something a little more robust. Casing is a little beat up, I’ll fix that at some point, looks like someone dropped it on the controller end
In the meantime, from reading here and other places (Facebook/Reddit) I gather the controller itself is rubbish - I have a ramps+full graphics display on hand (from a 3D printer I ended up putting a duet wifi in) are there any guides to hooking this up? And are there any other things I should do while I’m messing with the internals? I have a spare arudino mega so I was thinking of getting a flow meter and some temp probes and hooking that up to a display. I’ve also got an old radiator from PC water-cooling I might use to help keep the water cool.
Cohesion3D Mini - drops right in to replace the stock board, gets you full grayscale control for engraving, and is an all around affordable board that runs smoothie.
Make sure to get the GLCD adapter so you can put that screen you have to work with this board.
Standard arduino running GRBL 1.1 and servo shield is a cheap start and widely supported. The Ramps/Mega combo unfortunately has not been tuned well and has spotty updates. Unless you purchase one of the smoothie boards from cohesion3d (very highly recommended!) you will need a middle man board for the ribbon cable.
I ended up going with a cohesion mini, seems everybody loves them. And drop in replacement is always nice. I’ll probably rewire it anyway, I don’t like the look of the quality of wire used. Is there a wiring diagram for these available? I’d like to double check that it’s all correct, and poor wiring isn’t going to blow a 2nd PSU.
