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Mad Doctor
(@mad-doctor)
Active Member
Mosquito hotend firmware

Hi all.  This is my first post.  I set up my mk3 with a new mosquito hotend and I get 0/0 for the hotend temp.  Of course, this triggers the "Mintemp error."  During the Wizard, the hotend works fine.  I was able to do a PID configuration because the hotend was warm from the Wizard test.   I am trying to avoid frustration and I hope someone is willing to help with the modification for the thermistor.   I have altered Marlin before with my other printers, but I hope someone has already done the mod and is willing to share.  Thanks.

Posted : 18/09/2019 7:46 pm
Bunny Science
(@bunny-science)
Noble Member
RE: Mosquito hotend firmware

Brian, you don't specifically mention you are using the Slice thermistor nor which actual extruder. So we'll assume you are on the Slice because you are getting a MinTemp error. The simplest solution for me to give you is a link to my firmware which supports desirable goodies. https://github.com/guykuo/Prusa-Firmware/tree/0.9-Degree-Stepper-Support

Among things supported are the Slice thermistor.

Once you get to setting up Configuration_prusa.h, the start of that file contains define that turn on/off the extra features supported in my firmware. As you are probably not on 0.9 degree motors,

comment out...

#define X_AXIS_MOTOR_09 //kuo exper X axis
#define Y_AXIS_MOTOR_09 //kuo exper Y axis

uncomment the following to have the firmware support the Slice thermistor.

//#define SLICETHERMISTOR //uncomment for Slice Thermistor

 

 

You should not need to do any e-steps and microstepping stuff if you are on a direct drive, non-geared extruder. If you are on a geared extruder, uncommend the correct gearing define in the firmware and also set up microstepping and esteps as described in the firmware.

This post was modified 5 years ago 2 times by Bunny Science
Posted : 19/09/2019 6:09 am
Mad Doctor
(@mad-doctor)
Active Member
Topic starter answered:
RE: Mosquito hotend firmware

@guy-k2

Sorry, you are correct.  I am using the Slice thermistor and the heater cartridge.  Also, I am using the stock motors and stock extruder.  Thanks so much.  This is exactly what I was hoping for.  I really appreciate the instructions for getting this set up.  I will work on it this weekend. 

Posted : 19/09/2019 4:18 pm
Bunny Science
(@bunny-science)
Noble Member
RE: Mosquito hotend firmware

I am having great success with my Mosquito magnum (with Slice thermistor and heater) for polycarbonate printing at 290C.

You will find PC filament in preheat menu of my firmware. Got tired of manually dialing in the preheat temps.

Posted : 19/09/2019 5:17 pm
jmone
(@jmone)
Reputable Member
RE: Mosquito hotend firmware

Hi Guy, thanks for generating a new Firmware for the Magnum and MMU2 (I'm still on the previous one where were played with the distances).  I'm in the middle of a biggish print so I'm yet to try, but I see the distances are different by 3mm in the MMU.CPP:

CAN_LOAD: current_position[E_AXIS] += 56; --> I've been using 53

PULLBACK: current_position[E_AXIS] -= 48; --> I've been using 45

It would be great to also have a thread for your Firmware (this or another?).

Thanks again for your work - A+

Nathan

Posted : 21/09/2019 3:30 am
jmone
(@jmone)
Reputable Member
RE: Mosquito hotend firmware

....just canned my MMU2s print as I was getting colour bleed (need to up my purge), so I'm giving the updated FW a go with your 56/48mm settings and will report back (but so far so good).

Posted : 21/09/2019 4:27 am
Bunny Science
(@bunny-science)
Noble Member
RE: Mosquito hotend firmware

Current filament move distances in my firmware were arrived upon by measuring distances in CAD of the various hot ends/extruders. I focused on distance from Bondtech drive axle height to melt zone. Some previously published distances did not match well with the CAD dimensions. So, I decided upon new values aiming for equivalent behavior for the various Bondtech to melt zone distances.

Posted : 21/09/2019 8:33 am
jmone liked
jmone
(@jmone)
Reputable Member
RE: Mosquito hotend firmware

Yup - all good.  Just did a 100 MMU change test and not an issue.  Perfect.

Thanks

Nathan

Posted : 21/09/2019 8:47 am
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