Welcome to the SeeMeCNC Community

My printer had that issue - Both NOZ: and BED: would display DEF randomly. I installed a new hot end and it had the same issue. The connectors were fine at the hot-end, all the way to the RAMBo, where I found that the terminal itself had pulled off the board. The terminal pins were still soldered on...

Replying to myself. I have a friend who used to code for a living and loves Arudino, he helped. I wanted the programming to be clean, and I wanted the extruder motor cooling fan to run when the extruder cooler was running, simply because if the hot-end is hot, the cold-end will usually be running so...

All, I have an old Max v2 that I recently upgraded with an E3D v6 Volcano hot-end, and I also added an extruder-motor cooling fan and a new EZR-Struder. In the past, my extruder motor got so hot it would melt PLA during longer prints, or when using larger nozzles, and with the Volcano and the finest...