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    • In order to make sure the temperature reading is as stable as possible it is important to PID tune the setup.

    • The easiest way to do this is to use Repetier Host.

    • Repetier Host can be downloaded here: https://www.repetier.com/

    • Only run a PID tune after you have uploaded the new thermal settings to the Ender 3.

  1. Once you have downloaded Repetier Host open it up and click printer settings.
    • Once you have downloaded Repetier Host open it up and click printer settings.

    • Make sure the COM port you have the printer plugged into is selected.

    • Make sure the Baudrate is 115200

  2. Select connect. Select manual control.
    • Select connect.

    • Select manual control.

    • This will then allow the entry of Gcode.

  3. M303 C5 [E0] S200
    • M303 C5 [E0] S200

    • Enter the above code into the terminal.

    • Press enter.

  4. After it has run through the 5 cycles that were set it will show the Kp,Ki, and Kd values in the dialog box.
    • After it has run through the 5 cycles that were set it will show the Kp,Ki, and Kd values in the dialog box.

    • Make a note of these values.

  5. Open the Arduino IDE and find the PID settings in configuration.h Replace the old values with the ones you just gained from the PID tune.
    • Open the Arduino IDE and find the PID settings in configuration.h

    • Replace the old values with the ones you just gained from the PID tune.

    • The values entered here will not necessarily be the same as yours.

    • Select upload to load the new settings.

  6. If you get an error saying can't connect to board you will need to disconnect the Ender 3 from repetier host and then try again.
    • If you get an error saying can't connect to board you will need to disconnect the Ender 3 from repetier host and then try again.

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Dan Rock

Member since: 06/07/2018

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