Extruder Temp Reading Very High
I recently installed a new Phaetus Rapido 2 extruder and am getting readings that my temp is extremely high. Not exactly sure what's going on here, but I put the cables in the same ports as usual. Any ideas?
8 Replies
[extruder]
Check https://www.klipper3d.org/Pressure_Advance.html for pressure advance tuning.
#pressure_advance: 0.05
nozzle_diameter: 1.0 # Remember to change this if you change nozzle diameter.
dir_pin: e_dir_pin # Remove ! in front of pin name to reverse extruder direction
control: pid
pid_kp: 28.413
pid_ki: 1.334
pid_kd: 151.300
min_extrude_temp: 60
Your new hotend probably has a different kind of thermistor than your old one. You will need to update your config for the new thermistor (the rapido 2 should come with a 104NT thermistor).
Thanks @Max for your help
I confirmed it is P1000 thermistor based on the Amazon page for Rapido 2 where I bought it and applied the following settings to printer.cfg based on requirements found on https://www.klipper3d.org/Config_Reference.html#directly-connected-pt1000-sensor with my BTT Octopus board
[extruder]
#pressure_advance: 0.05
nozzle_diameter: 1.0 # Remember to change this if you change nozzle diameter.
dir_pin: e_dir_pin # Remove ! in front of pin name to reverse extruder direction
control: pid
pid_kp: 28.413
pid_ki: 1.334
pid_kd: 151.300
min_extrude_temp: 60
sensor_type: PT1000
sensor_pin: PF4
heater_pin: PA2
pullup_resistor: 4700
I am still seeing a wildly negative value for the MCU readout and am not sure why. Brand new cables are connected fine
Get rid of that config stuff. All you need to do is specify the sensor type.
And follow the wiring diagram from Rat-OS