Have you just purchased a new nozzle or hotend or replaced a new bed? 

You may need to require reconfigure PID to ensure the nozzle/bed temperature is not fluctuating. 

Note: Please be present and alert when performing below task and capable of stopping the printer in the case of emergency. 

Expected PID Autotune time : 10 - 20 minutes 

TABLE OF CONTENTS

• For Klipper Based Printers:
• For Marlin Based Printers: 
• For RepRap Firmware:

Some newer printers, have PID built in within control/display. For example Creality Printers running on Klipper (Neblua Pad, Sonic Pad): Control - Temperature - Auto PID [Remember to save the configuration after PID auto tune]

For Klipper Based Printers:

Documentation: https://www.klipper3d.org/Config_checks.html#calibrate-pid-settings

Run Following command via command: (Set the target to desire printing temperature, usually your most common printing temperature).

For Extruder/Hotend:

PID_CALIBRATE HEATER=extruder TARGET=170

For Bed

PID_CALIBRATE HEATER=heater_bed TARGET=60

Run Save Config to save into printer.cfg

SAVE_CONFIG

For Marlin Based Printers: 

Require Programs/hardware:

• Octoprint
• Pronterface

Please ensure the correct com port is selected prior proceeding on the guide below. 

Hotend Calibration: 

Reference: https://marlinfw.org/docs/gcode/M303.html

Enter below command into terminal: 

M303 E0 C5 S200 U1

It usually best to select most commonly used temperature to calibrate PID. If you usually print higher temperature, please adjust value after "s" to the desire temperature such as "S245" for ABS for instance. 

Heated Bed Calibration: 

Reference: https://marlinfw.org/docs/gcode/M303.html

Enter below command into terminal: 

M303 E-1 C5 S60 U1

It usually best to select most commonly used temperature to calibrate PID. If you usually print higher temperature, please adjust value after "s" to the desire temperature such as "S110" for ABS for instance. 

Saving PID into EEPROM:

Enter below command into terminal: 

M500

Additional NOTE: 

If your printer doesn't have EEPROM, you will need insert PID value into your gcode/slicer. 

Extruder: M301 E0 P[p value] I[i value] D[d value]

Example: 

M301 E0 P41.2 I0.05 D8

NOTE: Above value is random, please DO NOT COPY. Please use value generated using M303 command. 

Bed: 

Example: M304 P[p value] I[i value] D[d value]

M304 P41.2 I0.05 D8

NOTE: Above value is random, please DO NOT COPY. Please use value generated using M303 command. 

For RepRap Firmware:

Documentation: https://docs.duet3d.com/User_manual/Connecting_hardware/Heaters_tuning

Run Following command via command: (Set the target to desire printing temperature, usually your most common printing temperature). You can run M500 to save the configuration/settings.

M303 H1 S240 ; auto tune heater 1, default PWM (100%), 240C target