Chamber heater on the Duet October 04, 2015 01:02PM |
Registered: 8 years ago Posts: 475 |
Re: Chamber heater on the Duet October 04, 2015 01:30PM |
Registered: 10 years ago Posts: 14,672 |
Re: Chamber heater on the Duet October 07, 2015 03:09PM |
Registered: 8 years ago Posts: 475 |
Re: Chamber heater on the Duet October 07, 2015 04:42PM |
Registered: 10 years ago Posts: 14,672 |
Re: Chamber heater on the Duet October 15, 2015 09:03AM |
Registered: 9 years ago Posts: 1,159 |
Quote
dc42
I see no point in using fast PWM or dimmers for the chamber heater, because the heating time constant is so long. I suggest you use either bang-bang control for the chamber, or slow PWM (which works with DC/AC SSRs). I plan to change the bed and chamber heater to use slow instead of fast PWM in my next firmware release.
Re: Chamber heater on the Duet October 15, 2015 01:12PM |
Registered: 10 years ago Posts: 14,672 |
Re: Chamber heater on the Duet October 15, 2015 03:33PM |
Registered: 9 years ago Posts: 1,159 |
Quote
dc42
On the one hand, anything that E3D sells is worth supporting from a commercial viewpoint. On the other hand, although PT100 sensors are in principle capable of very accurate temperature measurement, I doubt whether the E3D implementation achieves better accuracy than a thermocouple. Their web site doesn't provide enough information to tell. There is already thermocouple support in Dan Newman's fork of RepRapFirmware, which I will merge into mine when I get time.