Things to know when setting up your Ramps 1.4 controller for K40
02/26/2016 at 7:53 AM #1245
The M2Nano board on my K40 stopped working after 4 months. Luckily I also purchased a Ramps 1.4 setup at the same time I purchased the K40. So needing to get it going I flashed the board with TurnkeyTyranny version of Marlin for CO2 lasers. I used the information from here to do the deed.
There are some great tips and changes that make using it for the K40 very useful.
One thing that is not covered is that the display board that came with the Ramps board had poor contrast. It is the Full Graphics Smart Controller. I found a fix for it here.
I ended up using the 270 OHM resistor. I liked the look of the display with this resistance.
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