Heater Decoupled by Fan
Arduino Mega Ramps 1.4
I am trying to connect the cooling fan on pin 9, I am getting 6.5 volts at the terminals, the fan turns on when the print starts but then the heater decouples after a few layers. So I am thinking that I have the settings right but something is conflicting?
This is the set up I have in Config.h.
#define FAN_BOARD_PIN -9 // was -1 (pins.h says Fan is on pin 9)
This line is from the "Start Configuration String" under Config.h
"fanBoardPin": -9, // was -1
This line from "Pins.h"
#define ORIG_FAN_PIN 9
//#define HEATER_2_PIN 9 // This line I disabled
any good Advice??
Thanks
Comments
Fixed all my problems, I used a thin metal plate with tape over it on the hot bed, bad idea! the metal dissipates the heat quicker than the heating element can supply enough heat and firmware trips out the bed. Second issue was I moved the power supply unit above and to one side of the heated bed for better access, did not realise that the cooling fan inside the power unit was blowing cold air across heated bed, enough to cause the firmware to trip out every 30 minutes or so. It created a feedback loop of the fan cooling heated bed and firmware telling power unit to put out more power! Get's to a point it can't supply anymore power and system shuts off. Just thought someone else might benefit from my stupid mistakes.
Regards
Tooluser