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    • Because the Prusa i3 MK2 already uses an E3D HotEnd the firmware change for Hemera consists of simply of changing the extruder steps per mm.

    • Rather than flashing new firmware one of the easiest methods is to simply send an M code command to update the steps per mm.

  1. Download and Install Proterface.
  2. Check the baudrate is 115200
    • Check the baudrate is 115200

    • Check you have the correct COM port selected. (this will be different from computer to computer)

    • Then click connect

  3. Type in M 503 to view the currently stored settings.
    • Type in M 503 to view the currently stored settings.

    • From this you should see the Esteps per mm is 161.30, unless you have calibrated the Esteps seperatly.

  4. Send M92 409 to the command line.
    • Send M92 409 to the command line.

    • This should set the E steps to 409.

    • In order to store that to the EEPROM you need to follow up with a M500 command.

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Dan Rock

Member since: 06/07/2018

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