PID tuning (Hotend)

Updated 7 months ago ​by Tomáš Chvalina

PID (Proportional Integral Derivate) are three values that Prusa printers utilize to maintain a stable temperature on the hotend. You can use the PID tuning to calibrate these numbers in case you are experiencing small fluctuations in temperature readings of your printer's nozzle (e.g +/- 5 C°)

If you are experiencing major temperature fluctuations, higher than +/-5°C, make sure your hotend thermistor is properly seated in the heater block and plugged to your miniRAMBo or EINSY RAMBo board.

How to perform PID tuning

Starting with firmware version 2.0.12., PID tuning is an optional calibration procedure, which is super easy to perform. It can be found in the LCD Menu - Calibration - PID calibration.

Follow these steps: 

  1. Once you open the PID calibration menu, set the temperature at which the calibration should run. 
  2. To achieve optimal results, select a temperature you most commonly prefer for your prints (e.g. the temperature for PLA, PETG or other favorite material). However, the PID tuning will increase the general stability for all temperatures.
  3. The nozzle will heat up to the selected temperature in 5 cycles. During these cycles, the printer will determine the amount of power needed to reach the user-defined temperature and maintain it. 
Be aware that PID tuning is not a solution for every temperature fluctuation issue. Always make sure that your printer is located in a dry environment with a stable temperature and no breeze.


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