Recently i've been upgrading my hardware, as well as software. I've downloaded new Marlin FW 1.1.x just today and begin configuring it. Before energising the whole setup I've done some basic safety checks, including MINTEMP check. For some reason, it does not trigger anything for Extruder 0(example in attachment), even with that: #define HEATER_0_MINTEMP 15 However, BED_MINTEMP works just fine.by BortEngineer - Firmware - Marlin
Yes, but firstly i suggest to check your wiring for issues, my issue was 12v on arduino analog pin. I've redefined pins in pins_RAMPS_14.h, in particular, ... #define TEMP_1_PIN 11 // ANALOG NUMBERING -- WAS 15 -- IT'S TOASTED ON MY MACHINE ... #define TEMP_BED_PIN 10 // ANALOG NUMBERING -- WAS 14 -- IT'S TOASTED ON MY MACHINE ... You can choose pins on your own, just make sby BortEngineer - RAMPS Electronics
Nevermind, i found the issue. Rewinding all stuff that were done, I've came to conclusion that I have toasted A14 and A15(somehow ) on Arduino when i was cleaning heatbed from hairspray residue with razor blade, shorted 12 volts to thermistor terminals, which altered input impedance on that inputs. To fix this i unsoldered A14 pin and add wire to A10 pin on AUX2 port, and remapped heatbed thermiby BortEngineer - RAMPS Electronics
Unsoldered one of 'failed' capacitors and tested it, it's should be fine. Any suggestions?by BortEngineer - RAMPS Electronics
I have RAMPS 1.4/MEGA 2560 machine, which worked flawlessly for almost 6 years until today. I powered it up today and instead of expected "3D printer ready" message i've got "ERR: MAXTEMP_BED". So I've started diagnostics. First thing i did is thermistor check: both extruder's and bed showed around 115k resistance with room temperature of 20 degrees celcius. I've checked this values on the boarby BortEngineer - RAMPS Electronics