prusa i3 mk3 firmware modifications · step 1 — prusa i3 mk3 firmware modifications because the...

Prusa i3 MK3 Firmware ModificationsWritten By: Dan Rock

Prusa i3 MK3 Firmware Modifications Draft: 2020-02-11Guide ID: 141 -

This document was generated on 2020-02-16 08:37:11 PM (MST).

© 2020 e3d-online.dozuki.com/ of 13

INTRODUCTION

Please note:

The change in mounting means the calibration wizards will fail, only calibrate the Z height.




Step 1 — Prusa i3 MK3 Firmware Modifications

Because the Prusa i3 MK3 already uses an E3D HotEnd the firmware change for Hemera consistsof changing the E steps per mm and entering new nozzle to probe offset values.

Step 2

Download fresh Prusa i3 MK3 firmware:

https://github.com/prusa3d/Prusa-Firmwar...

If you haven't already, also install the Arduino IDE.

https://www.arduino.cc/en/Main/Software




https://github.com/prusa3d/Prusa-Firmware

https://www.arduino.cc/en/Main/Software

Step 3

Connect the Prusa to your Computer.

Step 4

Power on.




Step 5

Navigate to the firmware folder.

Step 6

Navigate to the variants folder

Find the file named "1_75_MK3-EINSy10a-E3Dv6full.h"

Rename it to "Configuration_prusa.h"




Step 7

Copy and paste the file into the previous firmware folder.

Step 8

Double click to open theFirmware.INO file.




Step 9

Click file - preferences.

Paste into the Additional Boards Manager URLs field:

https://raw.githubusercontent.com/prusa3...




https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json

Step 10

Select: Tools - Board - Boards Manager.

Scroll to the bottom and install "Prusa Research AVR MK3 RAMBo EINSy by Prusa research."

Step 11

Select Tools - Boards:PrusaResearch EINSY RAMBo




Step 12

Find the config.h tab

Make sure #define LANG_MODE is set to 0, otherwise the screen will not display correctly whenthe firmware is flashed.

Step 13

Navigate to the Configuration_prusa.h tab.

Scroll down to line 429.

Change #define X_PROBE_OFFSET_FROM_EXTRUDER 23 to 54

Change Y_PROBE_OFFSET_FROM_EXTRUDER 5 to 11




Step 14

Select the COM port that the Prusais connected to.

Don't worry if your port number isdifferent than shown, anyperipherals connected will show upas a COM port, double check devicemanager if you are unsure which toconnect to.

Step 15

Press upload to flash the firmware.




Step 16

Download and Install Proterface.

https://www.pronterface.com/

Step 17

Check the baudrate is 115200

Check you have the correct COMport selected. (this will be differentfrom computer to computer)

Then click connect




https://www.pronterface.com/

Step 18

Type in M 503 to view the currentlystored settings.

From this you should see the Estepsper mm is 161.30, unless you havecalibrated the Esteps seperatly.

Step 19

Send M92 786.5 to the commandline.

This should set the E steps to 786.5

In order to store that to theEEPROM you need to follow up witha M500 command.




Step 20

This e steps value is a starting point, we recommend running an e step calibration in order to finetune your printers performance.




prusa i3 mk3 firmware modifications · step 1 — prusa i3 mk3 firmware modifications because the...

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