Wild fluctuations in extruder temperature, has anyone encountered this? I am using and e3d with 24v power to cartridge heater. I have run PID calibration and it is very stable when just sitting idle, but when it starts printing it goes crazy.
Could it be electrical interference from the motors? I put a ferrite bead on the sensor line but it does not seem to help.
Watching the video I have to wonder if your thermistor is bad. There isn’t any way you could actually be having these swings the block can’t heat and cool that fast.