Hi.
I am trying to tune both the bed and extruder on my DIY big printer.
The extruder can easilly go well over 260deg but seems to settle about one degree below my set temp (220),therefore it dosent start the print. I have tried the values given by the auto tune and tried many manual values for all P,I,Ds. The EEPROM is not active so the values should be taken (others are). Nothing much changes the problem except using the on/off type control.
The second problem when I try to use the auto tune on the bed.
I believe the correct use is M303 E-1 etc.......... but it just starts the extruder auto tune again, not the bed.
I have set manual values for the bed and its not too bad but as it draws a lot of power (240vac) my workshop lights flicker. If I could reduce the frequency of the on/off it would help.
Any advice welcome, thanks
