temperature variation (since update to 2.0.4)

[hmmatos]

Hi,
I have updated to 2.0.4 yesterday and I noticed today that I get a lot of temperatures fluctuations, is anyone with this problem?

E3d High Precision Heater Cartridges
E3d Thermistor Cartridge

config.g

M305 P1 T100000 B4725 C7.060000e-8 R4700   ; set thermistor + ADC parameters for heater 1
M143 H1 S285                               ; set temperature limit for heater 1 to 285C

[pipersw]

I have fluctuation if I set PWM to 50% and 40W cartrige, but none if PWM set to 100%, but I have the warning hoverheat message.
So I set PWM to 100%.

[Veti]

have you done a pid tune?

[hmmatos]

@Veti
yes

[hmmatos]

Hi,
I did another pid tune after the update and it seems to be good now.

[Phaedrux]

@pipersw said in temperature variation (since update to 2.0.4):

I have fluctuation if I set PWM to 50% and 40W cartrige, but none if PWM set to 100%, but I have the warning hoverheat message.
So I set PWM to 100%.

Reducing the PWM percentage may stop the warning but it won't actually save you from what the warning actually warns about. In the case of a fail-on scenario, PWM has stopped working anyway.