5

I'm using an Anet A8 with Marlin 1.1.6.

I've read countless guides on PID auto-tuning and never saw that the fan needed to be on, but when I look at the Marlin source code's ANet A8 configuration (here: example_configurations\ANet\A8\Configuration.h) it states:

  ...

  // ANET A8 Standard Extruder at 210 Degree Celsius and 100% Fan
  //(measured after M106 S255 with M303 E0 S210 C8)
  #define  DEFAULT_Kp 21.0
  #define  DEFAULT_Ki 1.25
  #define  DEFAULT_Kd 86.0

#endif // PIDTEMP

So, should activate the fan before running the auto-test if I wish to update the PID values in Marlin for my Anet A8?

Greenonline
  • 6,748
  • 8
  • 40
  • 68
Adam Plocher
  • 183
  • 1
  • 6

1 Answers1

7

You should run the fan at what you expect it to be at the majority of the time it is printing. If you tune at 100% fan and never use a fan then it will be too aggressive, if you tune at 0% fan and use the fan then you will struggle to maintain/reach temperature.

tjb1
  • 2,110
  • 17
  • 26