@dc42 said in Bed heater PID:

@deler said in Bed heater PID:

Another question came to my mind, do I need to do any PID tuning? if yes how can I do that?

Yes. Look up M303 on that same GCode wiki page.

after the tunning, I got the following results
Heater 0 model: gain 207.8, time constant 143.4, dead time 4.4, max PWM 1.00, calibration voltage 12.2, mode PID, inverted no, frequency default

also, I got a warning: heater 0 appears to be over-powered. if left on at full power, its temperature is predicted to reach 232c.

is it normal?

Another question came to my mind, do I need to do any PID tuning? if yes how can I do that?

@deckingman Thank you. it is more clear now

Hi,
I tried to find the answer to my question on the forum, but no luck.
I have silicon heater 220V controlled by SSR. Currently, it is working in Bang-bang mode. I want to use PID mode.
I have checked https://duet3d.dozuki.com/Wiki/Choosing_a_bed_heater#Section_Bed_heater_driven_using_a_Solid_State_Relay but it is not clear for me how to set PWM frequency to 10Hz.
can someone help me and tell me what parameters I need to use with M307

thanks @sinned6915 I will definitely check Ali Rubber heater

Hi @richard-f did it work with 10K resistor? and did you connect it between black and white wire?

thanks @mrehorstdmd for the great info

Hi @dc42
So you are recommending a heater with 360W. Actually I was thinking to install a cut-off thermal attache it to the heater it self (since it is easier to replace incase of failure).
But still I am lost about which brand should I buy

@bearer
There are not much specification to compare. Here you go the links to both of them

Keenovo https://www.aliexpress.com/item/32308797940.html

Shenzhen Ali https://www.aliexpress.com/store/product/300X300mm-750W-220V-w-NTC-100K-Thermistor-3M-Adhesive-back-Silicone-Heater-3D-Printer-Heater-Heatbed/709519_32643205159.html?spm=2114.12010608.0.0.ac9054338RjCWW

They are both using same thermostat as far as I know.

Hello,
I need help to do the right choice, I am confused about which silicone heater I should buy. Kennovo or Shenzhen Ali Brother Technology, I have a bed 330x330mm I am thinking to buy a 300x300mm 750W/220V silicon heater.
please, can someone tell me which heater I should go with since there is a price gap between them?

thanks in advance