How to access printer file system through USB connection in order to set up Hemera offsets, etc.
 

How to access printer file system through USB connection in order to set up Hemera offsets, etc.  

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darrin.brunner
(@darrin-brunner)
Active Member

I'm trying to follow the guide on E3D to get my Hemera working on my MK3S. I have the Hemera mounted to my custom designed bracket, I have gone through the setup procedure as far as I can--the printer wants me to set the nozzle height, but right now the nozzle is a bit off the edge of the print bed.

I want to set the pinda/nozzle offset as described in the above linked guide starting at Step 5.

I'm at the step where I'm to enter the printer's file system through the USB connection. I can't find a way to access the file system. I have the "drivers and addon" software installed from Prusa, I have configured the printer in Prusa Slicer, I've already successfully printed with the printer using the stock extruder. The printer currently shows up in Windows 10 as a properly working device under "other devices", but it does not show up as a device in the explorer window or anywhere else that I can see.

Thank you for any help you may be able to offer.

Posted : 12/02/2020 10:36 pm
Neophyl
(@neophyl)
Famed Member

You need to use pronterface or it’s equivalent. That gives you direct access to type in gcode/commands to change things like steps per mm etc and save them to eeprom.  

Posted : 12/02/2020 10:54 pm
JoanTabb
(@joantabb)
Moderator

you don't usually look at the printer file system from windows explorer. 

I believe Octoprint can load files onto the SD card... 

I suspect the changing of nozzle relationship to build plate, and nozzle to pinda relationship will need to be changed in firmware... 
Firmware Source code is available on the Prusa Git Hub, pages.
there are G code commands to change, and save the revised esteps settings if you need to change them!
try searching for help on modifying firmware...  it's not my expertise!!

 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 12/02/2020 10:58 pm
darrin.brunner
(@darrin-brunner)
Active Member

Shoot, I noticed that I linked to the wrong guide, this is the one about updating firmware for the MK3S that I'm trying to follow.

Thanks for the responses, I guess I'll try to find a different method.

Posted : 13/02/2020 12:43 am
Neophyl
(@neophyl)
Famed Member

That second link isnt valid.  If you mean https://e3d-online.dozuki.com/Guide/Prusa+i3+MK3+Firmware+Modifications/141 then that guide involves downloading the arduino programming environment to modify and flash new firmware to your printer.  Thats not what I would class as beginner level so I hope you are at least familiar with compiling software and programming embedded boards.

When you run that software if the printer is plugged into USB the program will be able to put it into bootloader mode.  Its at that point that it should show in the devices list as a COM port available.  You have to select the correct one.  When in bootloader mode its possible to upload new firmware to the board. 
You have to follow the steps exactly or you don't have a chance of it working.

 

Posted : 13/02/2020 7:23 am
darrin.brunner
(@darrin-brunner)
Active Member

@neophyl

Thanks. I can follow directions, I built the kit after all, I think the guide assumed too much? Using the arduino software to put the board into bootloader mode seems like an important step. How does one stop being a beginner, if the directions for learning aren't clear, or at least acknowledge that more info is needed and mention a source? I did download that software and install it, but a step 4.5 would have been nice--"Hey, if you don't know how to use this software, go read up and come back" sort of thing.

Anyway, thanks for the tip, I'll give it a try.

 

This post was modified 1 year ago by darrin.brunner
Posted : 13/02/2020 7:29 pm
darrin.brunner
(@darrin-brunner)
Active Member

@neophyl

...and I know you didn't write the guide, I just mean that as a general question.

Thanks again.

Posted : 13/02/2020 7:35 pm
Neophyl
(@neophyl)
Famed Member

@darrin-brunner

I don't generally use arduino's but I have played with one previously, there are a LOT of arduino tutorials around.  At the point where you are using that software to write firmware to the board its not a 3d printer, its just a connected arduino.  Or in this case the problem is - it isn't a connected arduino.  Maybe the main arduino site will have trouble shooting tips on what to do if a board doesn't show up in windows 10.  A quick google shows lots of hits for arduino not showing in windows 10.  

Pet peeve here but personally I think USB device support on Win10 is terrible.  I've got a couple of USB programming boards that enumerate perfectly in Windows 7 but windows 10 plain just refuses to pick them up.  

Posted : 13/02/2020 7:53 pm
darrin.brunner
(@darrin-brunner)
Active Member

SUCCESS! It is now printing.

Posted : 13/02/2020 10:16 pm
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