How to calibrate your hotend and heated bed PID settings using Marlin Firmware Autotune. This tutorial is for the cr10s pro and ender 3, but will work for any printer using the marlin firmware. Why PID tune? If you made hardware changes to your hotend or heated bed you should tune the PID settings. If you want don't want over extrusion or under extrusion tune your PID settings. At 3:35 I use k#. I should be p# i# d#

You can copy and paste the gcode commands. Remember to change the temperature and cycles with your values:
Hotend:
m303 c5 s215 / pid autotune command
m301 p# i# d# / enter pid values
m500 / save eeprom
m503 / report settings

Heated bed:
m303 c5 e-1 s55 / pid autotune command
m304 p# i# d# / set pid values
m500 / save eeprom
m503 / report settings

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