I have a Taz 6 with an Archim 2 board running marlin 2.0.7.2. I’m also running a flexydually v1 with the Budaschnozzle with a 4.7-ohm resistor and the Honeywell 100k thermistor, both brand new. When I heat up either hotend I get a temp overshoot of 40-60c which makes PID autotuning impossible. I’m compiling my own copy of marlin, built from drunkenoctopus, I’ve tried both the #5 and #7 (I think it should be #7) thermistors, and both yield the same result.
Is there something I’m missing in my config.h file? It seems like there is too much power going to the hotend, I can’t find anywhere that might have some good starting values for what the PID might be for the budaschnozzle.
This printer isn’t mine, I’m upgrading it for a friend and I don’t want to have to purchase a newer version of the flexy dually to make it work if I don’t have to.
Thank you!
At some point, someone contributed Budaschnozzle settings for TAZ 4. I have no idea if they would work for you, but the following is an excerpt from the configuration script:
MARLIN["TEMP_SENSOR_0"] = 7
MARLIN["TEMP_RESIDENCY_TIME"] = 10
MARLIN["TEMP_WINDOW"] = 1
MARLIN["TEMP_HYSTERESIS"] = 3
MARLIN["HEATER_0_MAXTEMP"] = 250
MARLIN["BANG_MAX"] = 70
MARLIN["PID_MAX"] = 74
MARLIN["THERMAL_PROTECTION_PERIOD"] = 40 # Seconds
MARLIN["THERMAL_PROTECTION_HYSTERESIS"] = 8 # Degrees Celsius
MARLIN["WATCH_TEMP_PERIOD"] = 60 # Seconds
MARLIN["WATCH_TEMP_INCREASE"] = 8 # Degrees Celsius
MARLIN["DEFAULT_Kp"] = 6
MARLIN["DEFAULT_Ki"] = .3
MARLIN["DEFAULT_Kd"] = 125
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Oh, this is a huge help. Thank you. I dropped my BANG_MAX to 115, but it was still oscillating 5c or so once it reached my target temp, so 70 makes a lot of sense. I’ll look through my settings again and compare them to this list.
Thank you for sharing this!
@marciot These settings worked perfectly, thank you for helping me, I really appreciate it!
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