I'm running the autotune PID because I had to replace the hotend. The command that I launch is
M303 E0 S200 C9. But from the temperature chart I see that he has only made two cycles, after which the autotune control seems to have gone mad and has remained stable on 213° C and is no longer doing autotune cycles. After a while I get
Recv: PID Autotune failed! timeout.
I am using Marlin Firmware version 2.0.3 (GitHub) installed on a MKS Gen v1.4 (Arduino MEGA 2560) board. The MKS Gen board replaces the original one of a Geeetech Prusa i3 Pro B. Hotend is 12V.
Do you have any suggestions? Has anyone experienced something like this?
I redo the PID Autotune and now I get a sawtooth: