I checked the terminals and everything is well connected. I don't know how to check if the RAMPS MOSFET has blown - can anyone advise on that? The lights come on when I send the signal to the board to turn on the heater so I get the sense that the RAMPS board is generally okay, but obviously some aspect could have shorted that would not cause the heater to get hot.by DoktrMike - Controllers
Thanks. I measured the D10/ground voltage as suggested, and I do get the 12V off and 0V on measurements that you described. I really don't see any bad joints around the heater itself, and like I said I've been using the printer for a long time (100s of hours or printing). More likely to me is something on the RAMPS board got fried but I don't know how to verify that's the case.by DoktrMike - Controllers
I have a home-built MendelMax 1.5+ that's been running great for around a year. RAMPS 1.4, 24V PSU with a 12V stepdown to run the hot end and fans. After a long print on Saturday, I turned the printer on on Sunday but found that the hot end would not heat up. Here's what I've observed: 1) The hot end thermistor is fine. I measure a good resistance across it, the software is reading room tempby DoktrMike - Controllers
Many thanks for the guidance. Is there a way to build a MendelMax 1.5 without buying the kit? i.e. sourcing the parts yourself? I could find many of the parts online (e.g., LulzBot has several subkits) but don't find a complete set of instructions. The only one I found shows you how to build the hardware but not install the electronics nor get it working. Since I'm new to this I would need a gooby DoktrMike - General
xclusive585 Wrote: ------------------------------------------------------- > We need just one patent lawyer to build his own > machine and get involved here. But the chances of > a lawyer being a tech-geek? :-( I guess you don't know many patent lawyers? Most of us are tech geeks and those who work in the electrical or computer space have a Masters or PhD in Electrical Engineering or aby DoktrMike - General
Hi everyone, I'm totally new to 3d printing, though have experience with electronics and the Arduino. I'm planning on building my own printer trying to keep the cost down to a reasonable extent. I'm pretty sure that I want to build a MendelMax; I like the aesthetic and it seems like it's worth the extra money over a standard Prusa. The thing is, I see that there's a Beta version of the MendelMby DoktrMike - General