Hotend temperature and heating issue January 02, 2019 03:28PM |
Registered: 9 years ago Posts: 21 |
Re: Hotend temperature and heating issue January 02, 2019 04:48PM |
Registered: 8 years ago Posts: 123 |
Quote
linked webpage
If you have a 4.7K board, and don’t make this change, your temperatures will report very high at room temperature on both the hot end and heated bed, and will over-read at the target temperature
Re: Hotend temperature and heating issue January 02, 2019 05:40PM |
Registered: 9 years ago Posts: 21 |
Re: Hotend temperature and heating issue January 03, 2019 11:55AM |
Registered: 8 years ago Posts: 123 |
Re: Hotend temperature and heating issue January 03, 2019 12:47PM |
Registered: 9 years ago Posts: 21 |
Re: Hotend temperature and heating issue January 04, 2019 03:19AM |
Registered: 10 years ago Posts: 14,672 |
Re: Hotend temperature and heating issue January 04, 2019 04:00AM |
Registered: 9 years ago Posts: 21 |
Already done, the reported values are the correct ones.Quote
dc42
1. Send M305 P1 without parameters. Check that the reported values are the correct ones as set in config.g.
Already done, with the 100k resistor connected in place of the thermistor to check the loom, then directly to the Duet. I also tried with various resistor values and checked against some resistance/temperature table I found in the troubleshooting documentation, the reported temperatures are always odd.Quote
dc42
2. To rule out a problem with the hot end fan/IR board, try connecting the 100k resistor directly to the Duet, with the cable from the hot end disconnected. You could also try some other resistor values, for example 10k and 1k. If those resistors give the wrong readings then it confirms a problem with the Duet, most likely with the processor.
Can you tell me which pin(s) I can use, please ? Regarding the 4k7 resistor, I suppose it is a pull-up one ?Quote
dc42
There are several temperature sense pins on the expansion connector that you could use instead. You would need to connect a 4k7 resistor between the pin and +3.3V.
Re: Hotend temperature and heating issue November 19, 2019 04:47AM |
Registered: 6 years ago Posts: 174 |
Re: Hotend temperature and heating issue November 24, 2019 02:29PM |
Registered: 9 years ago Posts: 21 |
Re: Hotend temperature and heating issue November 25, 2019 04:07AM |
Registered: 6 years ago Posts: 174 |