TheRyanRanch wrote:Hi Tim, been printing ok, I was wondering if you know what the max extruder temp is on the V4? I brought mine up to 270 and anything above that the Extruder just shutoff? any thoughts?
Marlin
does have a maximum temperature shutoff. The standard firmware for the V3b has, in Configuration.h line 156,
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#define HEATER_0_MAXTEMP 275
#define HEATER_1_MAXTEMP 275
#define HEATER_2_MAXTEMP 275
#define BED_MAXTEMP 150
By contrast, the firmware for the dual extruder (which uses the V4) has:
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#define HEATER_0_MAXTEMP 320
#define HEATER_1_MAXTEMP 320
#define HEATER_2_MAXTEMP 320
#define BED_MAXTEMP 150
So you will want to make this change and recompile/flash the firmware to get any temperature above 275. As long as you are recompiling the firmware, might as well hard-code the PID values from calibration (they go in the same Configuration.h file). If you need any help with this process, let me (us) know. Probably you can get the pre-compiled v4-compatible firmware somewhere (I haven't looked for a link), but you will still need to flash it yourself. I did not see any control codes that allow you to change the maximum temperature on the fly.
