Hi everybody, and sorry to post here,
I want to port a direct drive on the 3d printer prusa mini. Using a direct extruder from easythreed (this extruder head motor cost 10 dollars).
I have a m3d printer micro plus and i like this extruder type.
It works very well for flexible filament.
However the prusamini … is bowden…
So i ask prusa about any possibility to do that on the firmware or the configuration file.
I am not very with their response.
My biggest issue is the power… I fear that those motors 24byj-48 that are set for much lower current than their regular nema 17 stepper will burn if plugged directly.
The point is: I have aleeady modified the fisher price programmable worm by just adding a resistor on the cable for the sound in order to diminish the sound level (was way too loud)… so I ask them if using the cable and putting a resistor on the motor cable will avoid burning the motor but although enable motor function…
A quite sceptic answer from them…maybe I am right? I am not sure
Therefore I come here for some further ideas… is it possible to plug along the motor cable any small pcb part from sparkfun (for instance) in order to enable the current translation I would like to do?
Something that could A)set lower current B) set the steps .
This by just plugging an interface along the motor cables… maybe it requires a small processor?
A kind of external controll. This will rise interest for people who want to use other extruder set up such as bondtech…
So it is not selfish… only partiallly 
As prusa is not so keen at letting us play with their firmware without damaging their board… people are trying to be creative and use mechanical set up. (Like the ejection mod for the prusa mini … all mechanical using a gcode sequence at the end to bring the printing bed at a position that physically push a trigger…I like that)
I hope someone could guide me here- has anybody done something similar and how?
Thank you for any help
Dr Froggy
