Stepper Motor Current / LCD Timeout
Prusa Research,
I have been printing quite successfully using ABS since my kit build a few weeks ago. Recently, I started experimenting with PLA, and have had some issues with the extruder motor skipping. I've tried a range of extruder temperatures as well as print speeds. I'm sure there's a happy medium somewhere which I just haven't achieved. When the motor is skipping, I can add a tiny bit of extra force using my hand, which seems to work, and was wondering if increasing the current on the extruder motor would be useful.
I've found the following in configuration_adv.h:
// Motor Current setting (Only functional when motor driver current ref pins are connected to a digital trimpot on supported boards)
#define DIGIPOT_MOTOR_CURRENT {57,57,65,57,5} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)
Can this be modified on the Rambo board, and if so, what value for the extruder motor do you recommend? And, is the order X,Y,Z,Extruder?
And one final request please. I would also like to increase the amount of time before the LCD interface returns to the main screen. I've looked through the source files, but cannot find the parameter. Could you direct me to where I might find this. I'd like the timeout to be at least 60 seconds, as I find myself having to go back through the menus often to repeat a task.
Thank you again,
Todd
Re: Stepper Motor Current / LCD Timeout
For Rambo mini, the current is set in pins.h, its weird but mini uses PWM to set the current for motors.
You can also put a drop of kitchen oil at the end of the PLA filament to reduce friction.
Re: Stepper Motor Current / LCD Timeout
Josef,
Thank you for your reply. Where might I also find the timeout setting for the LCD. I would like to increase the timeout to prevent the LCD from returning to the home screen so quickly. I searched the source code for this one too, but could not find it.
Thank you again,
Todd
Re: Stepper Motor Current / LCD Timeout
Couldn't find it myself. A lot of things in Marlin is hardcoded. If I find a way I will let you know.
Re: Stepper Motor Current / LCD Timeout
@todd.t see LCD_TIMEOUT_TO_STATUS in ultralcd.h
Try setting it like this '#define LCD_TIMEOUT_TO_STATUS 300000' and your LCD will go back to main screen after 5 minutes.